Records for Rapid City Area, South Dakota (RAPthr) on 08-18
Record Highs
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1: 104°F (1959)
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2: 100°F (1983)
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3: 100°F (1964)
Record Lows
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1: 43°F (2002)
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2: 45°F (2004)
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3: 45°F (1985)
Lowest Highs
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1: 70°F (1958)
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2: 68°F (1976)
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3: 68°F (1955)
Highest Lows
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1: 58°F (1956)
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2: 61°F (2015)
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3: 63°F (1978)
Highest August temperature:
107°F on 08-13-2007.
Lowest August temperature:
37°F on 08-31-2020.
Average temperature is 71.6°F
Average high is 83.4°F
Average low is 59.8°F
Temperature data from 1942 to 2022.
Record Precipitation
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1: 0.62" (1996)
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2: 0.40" (1966)
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3: 0.38" (1949)
Precipitation data from 1942 to 2022.