Records for Rapid City Area, South Dakota (RAPthr) on 09-06
Record Highs
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1: 104°F (1978)
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2: 100°F (1976)
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3: 98°F (2002)
Record Lows
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1: 34°F (1943)
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2: 37°F (2017)
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3: 37°F (1956)
Lowest Highs
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1: 66°F (1978)
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2: 65°F (1990)
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3: 63°F (2013)
Highest Lows
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1: 51°F (1986)
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2: 56°F (1949)
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3: 59°F (1965)
Highest September temperature:
104°F on 09-02-1960.
Lowest September temperature:
18°F on 09-24-1985.
Average temperature is 66.6°F
Average high is 78.6°F
Average low is 54.5°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 0.37" (1946)
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2: 0.34" (2007)
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3: 0.26" (1992)
Precipitation data from 1942 to 2022.