Records for Riverside Area, California (RALthr) on 09-23
Record Highs
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1: 109°F (1949)
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2: 107°F (2002)
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3: 106°F (1944)
Record Lows
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1: 41°F (1941)
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2: 43°F (1926)
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3: 44°F (1953)
Lowest Highs
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1: 70°F (1991)
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2: 69°F (2012)
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3: 67°F (2021)
Highest Lows
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1: 69°F (1901)
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2: 71°F (1923)
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3: 74°F (1986)
Highest September temperature:
117°F on 09-05-2020.
Lowest September temperature:
37°F on 09-15-1902.
Average temperature is 75.2°F
Average high is 90.7°F
Average low is 59.6°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 0.17" (1987)
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2: 0.08" (1905)
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3: 0.02" (1958)
Precipitation data from 1893 to 2022.