Records for Riverside Area, California (RALthr) on 12-20
Record Highs
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1: 87°F (1939)
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2: 86°F (1917)
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3: 85°F (1906)
Record Lows
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1: 27°F (1948)
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2: 29°F (1927)
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3: 29°F (1908)
Lowest Highs
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1: 57°F (1921)
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2: 56°F (1929)
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3: 54°F (2010)
Highest Lows
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1: 48°F (1952)
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2: 50°F (1968)
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3: 50°F (1949)
Highest December temperature:
94°F on 12-03-1958.
Lowest December temperature:
21°F on 12-12-1949.
Average temperature is 55.5°F
Average high is 68.1°F
Average low is 43°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 2.04" (1921)
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2: 1.36" (1938)
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3: 0.85" (1952)
Precipitation data from 1893 to 2022.