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    Record Cool Weather in San Diego Among July Extremes

    August 1, 2010; 10:33 AM ET
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    The cool weather experienced in July has continued into August along the California coastline.

    July 2010 will be remembered by many people for its record-breaking heat across the country, but not by the residents of Southern California as record cool weather took hold over the month.

    Daily cool high temperature records were tied or broken on 21 days in July in numerous locations in and around the San Diego area.

    On July 8, San Diego tied its all-time coolest high for the month when temperatures only rose to 64 degrees. The last time this happened was in 1912.

    Taking a closer look at San Diego, high temperatures were well below normal as the average high was 69.4 degrees. High temperatures typically average 75.8 degrees in July.

    The difference of 6.4 degrees made July 2010 experience the fifth-lowest average high temperature since records began in 1875. It was also the lowest since 1916.

    Only eight days had a high recorded above 70 degrees in San Diego.

    Nighttime lows were not quite as extreme as highs, but still cooler. Low temperatures average 65.9 degrees in July, but the average low recorded this past month was 62.3 degrees.

    Overall, the month was 4.9 degrees cooler than the average temperature of 66 degrees.

    Other locations in Southern California that experienced below-normal temperatures in July were downtown Los Angeles, Riverside and Burbank.

    However, the cool weather was not seen in all of Southern California. Locations to the east of the mountains, where the cooler marine air cannot reach, experienced warmer-than-normal temperatures for July.

    Palm Springs finished up at 1.8 degrees above July's average monthly temperature of 93.9 degrees. Imperial felt a more dramatic change as daily temperatures were 4.1 degrees above the average of 94.4 degrees.

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