Records for Riverside Area, California (RALthr) on 12-18
Record Highs
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1: 89°F (1917)
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2: 87°F (1901)
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3: 85°F (1939)
Record Lows
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1: 29°F (1924)
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2: 29°F (1908)
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3: 30°F (1948)
Lowest Highs
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1: 55°F (2007)
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2: 54°F (2010)
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3: 54°F (1962)
Highest Lows
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1: 50°F (1967)
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2: 50°F (1908)
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3: 51°F (1909)
Highest December temperature:
94°F on 12-03-1958.
Lowest December temperature:
21°F on 12-12-1949.
Average temperature is 55.6°F
Average high is 68.3°F
Average low is 42.9°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 1.42" (1921)
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2: 0.67" (1938)
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3: 0.62" (1978)
Precipitation data from 1893 to 2022.