Records for Rapid City Downtown Area, South Dakota (UNRS2thr) on 09-09
Record Highs
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1: 100°F (1931)
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2: 99°F (1998)
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3: 96°F (1904)
Record Lows
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1: 32°F (2020)
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2: 35°F (1898)
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3: 36°F (1962)
Lowest Highs
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1: 70°F (2005)
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2: 67°F (2017)
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3: 67°F (1904)
Highest Lows
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1: 42°F (1898)
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2: 46°F (1962)
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3: 47°F (2007)
Highest September temperature:
103°F on 09-02-1960.
Lowest September temperature:
15°F on 09-25-1926.
Average temperature is 65.4°F
Average high is 77.4°F
Average low is 53.5°F
Temperature data from 1888 to 2022.
Record Precipitation
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1: 1.19" (1898)
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2: 1.04" (2002)
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3: 0.71" (2010)
Precipitation data from 1888 to 2022.