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| San Diego Weather |
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San Diego Weather
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San Diego has the perfect climate for any kind of outdoor activity, including getting married! And although chances are very slim that it will rain on your perfect day, please don't blame us if El Niño unleashes during your march down the aisle. ;)
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Current Weather Conditions |
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Weather conditions are courtesy of The Weather Channel. Check back during the week of your wedding to see if you'll need your cool shades or those pesky umbrellas!
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Here are some statistics and summaries from the National Weather Service to show you how rarely rainy weddings in San Diego occur.
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January is usually the coldest month of the year in San Diego and the only month when temperatures below the freezing point were experienced at the National Weather Service. Only on 9 days has a reading of 32 degrees or below been recorded since records began in 1872 with the absolute low of 25 degrees on January 7, 1913. The average minimum temperature for the month is 49.7 degrees, the average maximum 65.8 degrees and the mean 57.8 degrees. Daytime readings often reach 70 degrees and occasionally 80 degrees and on January 10 in 1953 rose to a high of 88 degrees. With an average of 7 days with rain it is the wettest month of the year. The normal total is 2.28 inches but amounts vary widely from year to year ranging from 8.06 inches in 1995 to no rain in several Januarys. Small hail has occurred occasionally. A few snowflakes were observed melting as soon as they reached the ground on January 10, 1949, the only day in January snow has occurred. Strong winds sometimes accompanied the rains reaching velocities of 30 to 35 mph and gusts between 40 to 45 mph. The fastest wind in any January was at the rate of 64 mph in 1988. The sun shines 72 percent of the time possible and the average month has 12 clear, 8 partly cloudy and 11 cloudy days. Heavy fog overspread the city on an average of 3 days each January but it is a most variable phenomenon, some months having as high as 10 days. The relative humidity is quite low averaging 70 percent in early morning, 55 percent near noon and 55 percent in late afternoon. |
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Longer days in February produce a slight rise in temperature over the previous month. The monthly mean of 59 degrees is 1.2 degrees higher than that of January. The average daily minimum is 51.5 degrees and the average daily maximum is 66.3 degrees. In most Februarys the maximum reaches 70 degrees or even 80 degrees and once in 1921 it soared to 89 degrees. A freezing temperature has never been registered during the month at the National Weather Service. The lowest reading was 34 degrees in 1891, 1894, 1899 and 1911. The mean rainfall for February is normally 2.04 inches. The average number of rainy days is 6 but in 1884 a measurable amount occurred on 15 days with a total of 9.05 inches. In contrast, 1912 and 1967 were without any rain. Small hail has occurred at intervals but no snow has been observed during the month. As in other winter months, winds reaching 30 mph or stronger occasionally have occurred in rain storms with the maximum of 53 mph in 1938. The relative humidity continues moderately low averaging 72 percent in the early morning, 58 percent near noon and 58 percent in the late afternoon. Sunshine averages 73 percent of possible with 11 clear, 7 partly cloudy and 10 cloudy days. Heavy fog forms on an average of 3 days but there is wide variation from year to year. |
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Temperatures continue to climb in March and the monthly mean of 60 degrees is 1.1 degree higher than that of February and 2.2 degrees higher than that of January. The average daily maximum is 66.3 degrees and the average daily minimum of 53.6 degrees. The absolute low of 36 degrees was recorded in 1894 and the absolute high of 99 degrees was recorded in 1879. Occasionally hot dry winds from the interior have caused temperatures to rise well into the 80s and on three days into the 90s. The last time a maximum temperature of 90 degrees or above occured was on the 29th of 2005, when the temperature soared to 91 degrees. Still in the rainy season, March is normally the second wettest month averaging 2.26 inches and 7 days with measurable amounts. In 6 of the months the total precipitation has exceeded 5 inches but on the other hand in 1857 and 1865 none was recorded. The greatest rainfall in any one March was 7.88 inches in 1867. As in the two previous months stormy weather and high winds have been frequent and in 1938 a maximum velocity of 51 mph was recorded at the National Weather Service. There are 11 clear, 9 partly cloudy and 11 cloudy days on the average and 2 days with heavy fog. Sunshine is 70 percent of the possible and relative humidity is about the same as in January and February with an average of 74 percent in the early morning, 60 percent near noon and 59 percent in the late afternoon. |
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Temperatures continue to rise slowly through April and the monthly mean of 62.6 degrees is 2.6 degrees above that of March. The average daily maximum is 68.7 degrees and the average daily minimum is 55.6 degrees. In some Aprils there have been days with hot, dry winds and temperatures well in excess of 80 degrees. On 11 such occurrences...90 degrees or higher has been recorded at the National Weather Service. The extremes for the month are 98 degrees in 1989 and 39 degrees in 1875. Showers rather than prolonged rains have been the rule. These have occurred on an average of 5 days during the month. The normal for the month is 0.75 inch but in 1926 the exceptionally large total of 5.37 inches was recorded of which 3.23 inches fell in one day. This is one of the heaviest 24 hour rainfall amounts ever measured in the city. Only four times since 1850 has the month been without measurable rainfall. Strong winds have been of short durations and rarely over 30 mph, but once in 1915 a velocity of 46 mph was registered at the National Weather Service. As a rule April ushers in the night and early morning low clouds so characteristic of our summer and fall months, but the percentage of sunshine is little affected by the cloudiness and the average of 66 percent of possible sunshine is only slightly below that of the preceding months. Clear days average 10, partly cloudy 10 and cloudy 10. There is an average of 1 day of heavy fog. The relative humidity averages 76 percent in the early morning...60 percent near noon and 59 percent in the late afternoon. |
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May is normally characterized by persistent overcast skies during the night and morning hours and by less sunshine than any other month except June. Temperatures continue their upward trend with the most noticeable rise in nighttime readings. The normal daily maximum for the month is 69.3 degrees, the normal daily minimum 59.8 degrees and the mean 64.6 degrees. On ten days the record maximum temperatures are in the 90s and was 98 degrees on May 25, 1896 the absolute high for May. The cool sea breeze, however, prevails nearly every day and temperatures above 80 degrees rarely have been reached. Nights are uniformly mild and the lowest reading during the month was 45 degrees in 1915. Our long dry season usually begins in May and the average number of days with measurable rain is 2 with an average monthly total of 0.20 inch. On 3 occasions, however, the monthly total has exceeded 2 inches with the greatest rainfall 2.54 inches in 1921. Stormy weather is almost unknown during the month and winds over 20 mph have been infrequent. Only twice have winds over 30 mph been recorded at the National Weather Service office. The highest wind ever recorded in May was 40 mph on May 29, 1988. The other time winds over 30 mph were recorded was in 1922 when winds of 37 mph were registered. Although skies are commonly overcast during the night and morning hours, heavy fog is rare, the average being only 1 each May. Clear days number 8, partly cloudy 12 and cloudy 11. The sun shines 58 percent of the time possible, about 11 percent less than the winter average. May and June are the cloudiest months of the year which is a paradox because they are two of the 5 driest months of the year. Relative humidity shows little change from April with humidity in the early morning 77 percent, near noon 65 percent and in the afternoon 64 percent. |
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Temperature in June continues the slow rise of preceding months and the mean of 67.4 is 2.8 degrees above the mean for May. The daily maximum averages 72.2 degrees and the daily minimum 62.6 degrees. Changes from day to day normally have been small and only 12 days since 1872 has the record maximum been 90 degrees or higher. The absolute high is 101 degrees in 1979. The absolute low is 50 degrees which last occurred in 1943. Well into the dry season, June averages only one day with measurable rain and a monthly average of 0.09 inch. Only once since 1850 has the monthly total exceeded one half inch. This was in 1850 when 0.68 inch and 1990 with 0.87 inches recoreded. June is a quiet month and thunderstorms will occasionally develop in the mountains and deserts with monsoonal moisture. June is normally the cloudiest month of the year with only 57 percent of possible sunshine due largely to the persistence of overcast skies during the morning hours. Clear days average 9, partly cloudy 12 and cloudy 9. There is an average of 1 day of heavy fog. Relative humidities show a slight increase over previous months with averages of 81 percent near sunrise, 69 percent near noon and 66 percent near 4 pm. |
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Night and morning cloudiness continues through July, but afternoons are generally clear and bright. Under the protective blanket of moist air from the Pacific, temperatures are low for the latitude. The daily maximum temperature rarely exceeds 85 degrees. The highest temperature in July was 100 degrees in 1930 and the lowest temperature was 54 degrees in 1884. The average daily maximum temperature is 75.8 degrees, the daily minimum 65.9 degrees and the monthly mean 70.9 degrees. Hot, humid weather is almost unknown and as a result thunderstorms rarely occur, but July begins the thunderstorm season in the mountains and deserts. The month is in the heart of the dry season and rainfall is negligible averaging only 0.03inch. Since the record began in 1850 over half of the Julys have been without measurable rainfall. The wettest and the only one with a total of over an inch was 1865 with 1.29 inches. As there have been no storms of any intensity during July, winds have never been strong and the highest velocity recorded at the National Weather Service was only 30 mph in 1925. The average sunshine is 68 percent of the possible or about 12 percent above the amount for June. Heavy fog has averaged about once each July and normally there are 13 clear, 13 partly cloudy and 5 cloudy days. The relative humidity averages 81 percent near sunrise, 69 percent near noon and 65 percent at 4 pm. |
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August is normally our warmest month with the normal high of 77.8 degrees, the normal low 67.3 degrees and the monthly normal of 72.6 degrees. Extremes since the establishment of the National Weather Service records in 1872 were 98 degrees in 1955 and 54 degrees in 1895. Readings of 80 degrees or higher were far from common and there have been 15 days during the entire period with maximum records for the day of 90 degrees of higher. Rain seldom falls in the city and 60 percent of the Augusts have been without a measurable amount. The monthly rainfall average is 0.10 inch and the average number of rainy days with 0.01 inch or more is one. In two years, however, there were heavy amounts. There were 2.13 inches from the remnants of tropical storm doreen in 1977, 1.95 inches in 1873 and 1.36 inches in 1854. As in the other summer months, thunderstorms have been rare and never severe except in the mountains and deserts. The highest wind recorded at the National Weather Service being only 29 mph. Usually skies become clear by midmorning and as a result sunshine is plentiful with a monthly mean of 70 percent of possible sunshine and is tied for 5th sunniest month of the year. Clear days average 15, partly cloudy 12, cloudy 4 and 1 day with heavy fog. There is little change in relative humidity from July, the average being 81 percent in the early morning, 68 percent near noon and 66 percent in the late afternoon. |
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September Weather Summary |
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National Weather Service records since 1872 show that about one third of the total number of days with a temperature of 90 degrees or higher in San Diego occurred in September, for an average of about one each year. These high readings were almost invariably accompanied by hot, dry easterly winds in the county known as Santa Anas. It was during one of these occurrences that the all time high of 111 degrees was recorded on September 26, 1963. However, monthly averages have been changed little by the occasional hot days, and the normal maximum is only 77.1 degrees, the normal low 65.6 degrees and the monthly normal 71.4 degrees. The lowest recorded was 50 degrees. Our dry season continues through September and in more than half of the years no measurable amounts of rain were recorded during the month. The normal rainfall is 0.24 inch with the greatest monthly total 2.58 inches in 1939. September is normally the height of the hurricane season in the Eastern Pacific and is the month that dissipating major tropical storms have come through San Diego. Three of the last five tropical storms that came through San Diego came through in September with two of them in August: tropical storm Doreen, August 16 and 17, 1977; tropical storm Kathleen, September 9-12, 1976; tropical storm Hyacinth, September 3-6, 1972; tropical storm Katrina, August 31, 1967; tropical storm Katherine, September 17-19, 1963 and tropical storm Nora, September 24-25 1997. During a dissipating tropical storm that entered the Southern California coast at San Pedro, called the Tehachapi Storm of September 30, 1932, San Diego winds attained a speed of 41 miles per hour the record for the month. As a rule the night and morning overcast skies of summer become less persistent, but the relative humidity remains high, averaging near that of August with 79 percent in the morning, 66 percent near noon and 65 percent in the late afternoon. At the time of the east winds, though, several days of dry weather and extremely low humidity prevail. Clear days average 15, partly cloudy 9 and cloudy 6 with an average of 2 days of heavy fog. |
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October is the last of the dry months and is usually a transitional period with variable weather. A mixture that includes weather from the previous dry months with a preview of the upcoming wet months. The normal daily maximum temperature is 74.0 degrees and the normal daily minimum is 61.2 degrees with a mean monthly temperature of 67.6 degrees. Extremes for the month range from 107 degrees in 1961 to 43 degrees in 1971. There are 2 days of measurable rain on the average, including one day of thundershowers. These wet days usually occur late in the month as storm systems from the pacific northwest move farther south. The average rainfall is 0.37 inch. This is 0.14 inch more than September, but 0.77 inch less than November. The greatest monthly total was 3.67 inches in 1925. The minimum was zero which occurred last in 1967. October has plenty of sunshine with 68 percent of possible. October averages 14 clear days, 10 partly cloudy and 7 cloudy days. During the month there are an average of 3 days of heavy fog. There is an average of one day of clear, dry weather when santa ana winds push temperatures into the 90s. Relative humidity averages 75 percent in the early morning, 60 percent near noon and 62 percent in the late afternoon. Wind speeds average 6.5 mph. The strongest wind for the month was 39 MPH from the south on the 20th of 2004.
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November has a normal maximum temperature of 69.9 degrees and an average minimum of 53.6 degrees which shows the greatest mean range of any month. It also shows a noticeable cooling trend and the mean temperature of 61.8 degrees is 5.8 degrees lower than for October. Since hot, dry easterly winds decrease during the month, maximum temperatures of 90 degrees or higher have occurred less frequently than in September and October. As a rule, temperatures seldom have gone above 80 degrees or below 40 degrees, although 97 degrees was recorded in 1977 and 1976 and 36 degrees in 1919. Precipitation increases with the monthly average becoming 1.45 inches and the number of days with a measurable amount is 5. Regardless of the fact that there have been several Novembers with no rainfall, the rainy season May be said to begin during the month as amounts in excess of 2 inches have been recorded on several occasions. The greatest monthly total was 5.82 inches in 1965. High winds have been infrequent but an unusually severe storm in 1944 produced a maximum of 51 mph at the National Weather Service. More sunshine can be expected in November than any other month. Total possible sunshine is 74 percent. Clear days average 15, partly cloudy 7 and cloudy 8 with 4 days of heavy fog. The relative humidity averages 72 percent in the early morning, 57 percent near noon and 61 percent in the late afternoon. |
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Winter as we know it in San Diego generally begins about the middle of December. Even then temperatures are moderate, the daily high averaging 66.3 degrees, the normal low 48.9 degrees and the mean 57.6 degrees or 4.2 degrees cooler than November. Since 1872 the temperature has dropped to the freezing point twice during the month, once in 1879 and again in 1891, but has never dropped lower. Although the highest reading was 88 degrees in 1963, temperatures above 80 degrees have been infrequent. The normal rainfall increases to 1.31 inches and the days with measurable rain average 6. However, monthly totals have varied widely and have ranged from none in several Decembers to 9.26 in 1921. A trace of snow fell on only one day in the month, December 18, 1967. In some nearby locations amounts of a half inch or more fell and remained on the ground for an hour or more. On a few occasions storm winds have reached 40 mph and on the 29th in 2004 a speed of 58 mph was registered, which is a record for December. Average sunshine is 73 percent of possible which is 2 percent less than in November. Clear days average 14, partly cloudy 7 and cloudy 10. The average number of days with heavy fog is 4 but there is a substantial variation from year to year. Despite the increase in rainfall, the relative humidity continues moderate with a mean of 70 percent in the early morning, 55 percent near noon and 58 percent near sunset. |
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NOTE: Weather information comes courtesy of the National Weather Service. All readings are taken at Lindbergh Field near Downtown San Diego. If you are inland, the sunshine percentage should increase. In addition, add anywhere from 5-20 degrees for a better temperature estimate. |
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