Records for Rapid City Downtown Area, South Dakota (UNRS2thr) on 09-21
Record Highs
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1: 93°F (1922)
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2: 91°F (1936)
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3: 90°F (1938)
Record Lows
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1: 32°F (1954)
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2: 32°F (1934)
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3: 32°F (1904)
Lowest Highs
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1: 63°F (1938)
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2: 62°F (1937)
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3: 62°F (1936)
Highest Lows
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1: 37°F (1895)
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2: 46°F (1971)
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3: 46°F (1925)
Highest September temperature:
103°F on 09-02-1960.
Lowest September temperature:
15°F on 09-25-1926.
Average temperature is 60.1°F
Average high is 71.5°F
Average low is 48.7°F
Temperature data from 1888 to 2022.
Record Precipitation
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1: 1.56" (1910)
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2: 0.57" (1998)
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3: 0.44" (1896)
Precipitation data from 1888 to 2022.