Records for Charleston Downtown Area, South Carolina (CXMthr) on 05-21
Record Highs
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1: 99°F (1938)
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2: 96°F (1998)
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3: 95°F (1962)
Record Lows
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1: 51°F (1894)
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2: 53°F (1954)
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3: 55°F (1994)
Lowest Highs
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1: 78°F (1998)
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2: 76°F (2019)
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3: 76°F (2017)
Highest Lows
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1: 66°F (1994)
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2: 69°F (2005)
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3: 69°F (2002)
Highest May temperature:
100°F on 05-27-2019.
Lowest May temperature:
45°F on 05-20-1894.
Average temperature is 74.6°F
Average high is 80°F
Average low is 69.3°F
Temperature data from 1893 to 2022.
Record Precipitation
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1: 2.26" (1966)
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2: 1.42" (1972)
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3: 1.14" (1991)
Precipitation data from 1893 to 2022.