Records for Rapid City Area, South Dakota (RAPthr) on 09-09
Record Highs
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1: 102°F (1994)
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2: 102°F (1979)
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3: 100°F (1998)
Record Lows
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1: 24°F (2020)
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2: 32°F (2001)
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3: 32°F (1962)
Lowest Highs
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1: 68°F (2005)
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2: 67°F (1979)
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3: 64°F (1998)
Highest Lows
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1: 46°F (1962)
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2: 50°F (2007)
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3: 54°F (2020)
Highest September temperature:
104°F on 09-02-1960.
Lowest September temperature:
18°F on 09-24-1985.
Average temperature is 65.4°F
Average high is 77.4°F
Average low is 53.5°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 0.85" (2002)
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2: 0.75" (2010)
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3: 0.55" (1949)
Precipitation data from 1942 to 2022.