Records for Rapid City Area, South Dakota (RAPthr) on 09-15
Record Highs
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1: 103°F (1948)
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2: 97°F (1992)
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3: 94°F (1995)
Record Lows
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1: 32°F (1965)
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2: 33°F (2014)
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3: 33°F (1947)
Lowest Highs
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1: 60°F (1985)
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2: 58°F (2018)
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3: 58°F (2015)
Highest Lows
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1: 42°F (1973)
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2: 46°F (2011)
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3: 48°F (1986)
Highest September temperature:
104°F on 09-02-1960.
Lowest September temperature:
18°F on 09-24-1985.
Average temperature is 62.9°F
Average high is 74.6°F
Average low is 51.2°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 0.53" (1967)
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2: 0.33" (2017)
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3: 0.29" (2011)
Precipitation data from 1942 to 2022.