Records for Riverside Area, California (RALthr) on 05-20
Record Highs
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1: 108°F (1942)
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2: 100°F (2000)
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3: 100°F (1988)
Record Lows
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1: 37°F (1948)
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2: 40°F (1949)
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3: 40°F (1933)
Lowest Highs
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1: 62°F (1997)
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2: 61°F (2000)
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3: 61°F (1993)
Highest Lows
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1: 65°F (1975)
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2: 65°F (1921)
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3: 65°F (1903)
Highest May temperature:
110°F on 05-29-1984.
Lowest May temperature:
33°F on 05-01-1915.
Average temperature is 68.3°F
Average high is 81.1°F
Average low is 55.4°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 0.29" (1921)
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2: 0.15" (1949)
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3: 0.04" (1975)
Precipitation data from 1893 to 2022.