Records for Riverside Area, California (RALthr) on 09-30
Record Highs
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1: 108°F (2020)
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2: 108°F (1980)
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3: 106°F (2001)
Record Lows
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1: 42°F (1948)
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2: 42°F (1915)
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3: 43°F (1940)
Lowest Highs
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1: 68°F (2010)
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2: 68°F (1997)
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3: 67°F (2016)
Highest Lows
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1: 67°F (1983)
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2: 67°F (1903)
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3: 67°F (1894)
Highest September temperature:
117°F on 09-05-2020.
Lowest September temperature:
37°F on 09-15-1902.
Average temperature is 72.8°F
Average high is 87.4°F
Average low is 58.3°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 1.72" (1921)
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2: 0.86" (1916)
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3: 0.64" (1983)
Precipitation data from 1893 to 2022.