Records for Riverside Area, California (RALthr) on 09-21
Record Highs
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1: 109°F (1943)
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2: 106°F (2003)
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3: 105°F (1939)
Record Lows
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1: 42°F (1924)
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2: 43°F (1941)
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3: 44°F (1950)
Lowest Highs
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1: 80°F (1939)
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2: 71°F (2015)
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3: 68°F (2016)
Highest Lows
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1: 72°F (1961)
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2: 73°F (1948)
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3: 73°F (1929)
Highest September temperature:
117°F on 09-05-2020.
Lowest September temperature:
37°F on 09-15-1902.
Average temperature is 75.8°F
Average high is 91.7°F
Average low is 60°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 0.02" (1914)
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2: 0.01" (1918)
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3: 0.00" (2017)
Precipitation data from 1893 to 2022.