Records for Rapid City Area, South Dakota (RAPthr) on 05-20
Record Highs
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1: 92°F (1964)
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2: 91°F (1954)
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3: 90°F (1992)
Record Lows
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1: 25°F (2003)
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2: 26°F (1968)
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3: 31°F (2022)
Lowest Highs
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1: 59°F (1991)
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2: 59°F (1964)
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3: 59°F (1948)
Highest Lows
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1: 39°F (2019)
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2: 45°F (1975)
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3: 47°F (1959)
Highest May temperature:
98°F on 05-27-1969.
Lowest May temperature:
18°F on 05-01-1950.
Average temperature is 56.5°F
Average high is 66.9°F
Average low is 46.2°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 1.51" (1957)
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2: 1.01" (1990)
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3: 0.98" (1987)
Precipitation data from 1942 to 2022.