Records for Rapid City Downtown Area, South Dakota (UNRS2thr) on 09-15
Record Highs
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1: 101°F (1948)
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2: 93°F (2019)
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3: 93°F (1955)
Record Lows
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1: 30°F (1934)
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2: 30°F (1889)
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3: 31°F (1903)
Lowest Highs
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1: 65°F (1955)
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2: 64°F (2020)
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3: 63°F (2015)
Highest Lows
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1: 43°F (1912)
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2: 44°F (2011)
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3: 47°F (1903)
Highest September temperature:
103°F on 09-02-1960.
Lowest September temperature:
15°F on 09-25-1926.
Average temperature is 62.9°F
Average high is 74.6°F
Average low is 51.2°F
Temperature data from 1888 to 2022.
Record Precipitation
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1: 2.08" (1913)
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2: 0.55" (2017)
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3: 0.46" (1964)
Precipitation data from 1888 to 2022.