10 All-Time Hottest Weather Temperature Days in San Francisco

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The all-time hottest temperatures ever recorded in San Francisco dating back to 1874.

These are the ten all-time hottest weather temperature days recorded in the city of San Francisco, California. The temperature data for Downtown San Francisco dates back to 1874. As anybody who lives in the city, or who has visited here knows, San Francisco can get pretty hot at times, though it is usually much cooler in San Francisco than it is in the surrounding areas.

The hottest temperature ever recorded in San Francisco, California is 103 degrees, which occurred on both June 14, 2000 and July 17, 1988. The hottest temperature ever recorded in the state of California is 134 degrees, which occurred on July 10, 1913 in Death Valley.

One hundred degree weather days are not common in the city of San Francisco itself, though they are much more common in the surrounding areas. The earliest date that a 100 degree weather day occurred in San Francisco in any year dating back to 1874 is May 30th. That latest date that a 100 degree temperature day occurred in any year is October 5th.

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10 All-Time Hottest Weather Temperature Days in San Francisco

T-1. June 14, 2000 - 103 degrees

T-1. July 17, 1988 - 103 degrees

T-3. October 5, 1987 - 102 degrees

T-4. September 14, 1971 - 101 degrees

T-4. May 30, 2001 - 101 degrees

T-4. June 14, 1961 - 101 degrees

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T-4. September 16, 1913 - 101 degrees

T-4. September 8, 1904 - 101 degrees

T-9. October 4, 1987 - 100 degrees

T-9. September 8, 1984 - 100 degrees

It has been 100 degrees in San Francisco at other times, just the last two dates are listed above.

The hottest month of the year in San Francisco is September, which has an average daily temperature of 63.5 degrees, followed by August with an average daily temperature of 62.5 degrees. The next hottest month is October at 62.3 degrees, followed by July at 61.4 degrees and June at 60.6 degrees.

Conclusion

San Francisco is normally very cool, but as you can see it can get very hot. In my personal experience, you can start out in San Francisco in the morning wearing a heavy coat and have the heat on in the car, and by the time you get to Concord, in the East Bay area, it is hot and you need the air conditioning on in the car.

One of the funniest quotes ever from Mark Twain was this, “The coldest winter I ever saw, was a summer in San Francisco.” Yes it can be cold in the bay area of San Francisco, but it can also get very hot at times. This is usually due to the flow of the wind. An onshore wind can be very cooling, just ask anyone that has ever been to a game at Candlestick Park. Other times with an offshore wind, the temperature can really get hot.

This is because of the hills to the east of San Francisco; they are called the Berkley Hills, and as an offshore wind occurs, this creates and warming wind and can really warm up the Bay Area and San Francisco. California is sure known to have interesting weather.

For more see San Francisco Weather Facts, Averages and Records

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Source: http://www.wrh.noaa.gov/mtr/

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Joe Dorish

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