Records for Rapid City Area, South Dakota (RAPthr) on 09-21
Record Highs
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1: 92°F (2013)
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2: 88°F (2005)
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3: 87°F (2015)
Record Lows
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1: 23°F (1995)
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2: 25°F (1983)
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3: 29°F (1954)
Lowest Highs
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1: 53°F (2017)
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2: 53°F (2008)
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3: 52°F (2005)
Highest Lows
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1: 43°F (1995)
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2: 49°F (1971)
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3: 50°F (2004)
Highest September temperature:
104°F on 09-02-1960.
Lowest September temperature:
18°F on 09-24-1985.
Average temperature is 60.1°F
Average high is 71.5°F
Average low is 48.7°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 0.45" (1998)
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2: 0.34" (1963)
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3: 0.30" (1989)
Precipitation data from 1942 to 2022.