Records for Rapid City Area, South Dakota (RAPthr) on 05-15
Record Highs
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1: 90°F (1987)
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2: 87°F (1978)
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3: 87°F (1955)
Record Lows
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1: 30°F (2016)
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2: 30°F (2005)
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3: 32°F (2014)
Lowest Highs
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1: 61°F (1987)
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2: 57°F (1944)
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3: 56°F (1984)
Highest Lows
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1: 52°F (1957)
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2: 53°F (2015)
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3: 53°F (1943)
Highest May temperature:
98°F on 05-27-1969.
Lowest May temperature:
18°F on 05-01-1950.
Average temperature is 54.7°F
Average high is 65°F
Average low is 44.3°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 1.09" (2015)
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2: 1.06" (1982)
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3: 0.83" (1952)
Precipitation data from 1942 to 2022.