Records for Rapid City Area, South Dakota (RAPthr) on 09-01
Record Highs
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1: 101°F (2012)
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2: 99°F (2004)
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3: 99°F (1983)
Record Lows
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1: 40°F (1974)
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2: 41°F (1981)
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3: 42°F (1972)
Lowest Highs
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1: 66°F (2012)
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2: 66°F (1970)
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3: 64°F (1953)
Highest Lows
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1: 51°F (1994)
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2: 51°F (1974)
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3: 60°F (2006)
Highest September temperature:
104°F on 09-02-1960.
Lowest September temperature:
18°F on 09-24-1985.
Average temperature is 68.2°F
Average high is 80.3°F
Average low is 56.1°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 1.09" (2018)
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2: 0.75" (1974)
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3: 0.56" (2006)
Precipitation data from 1942 to 2022.