All-time weather records — Summerville, SC

Record high
107.1°F
September 21, 1925
Record low
-5.1°F
February 14, 1899
Wettest day
10.23 in
August 12, 1940

Climate change signal in Summerville

5.5%

of Summerville's all-time daily heat records were set in the last decade (20 of 366 records since 2015).

1.4%

of all-time daily cold records were set in the last decade (5 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1890s
2
3
1900s
30
23
1910s
27
18
1920s
68
24
1930s
54
36
1940s
32
20
1950s
42
21
1960s
22
56
1970s
15
70
1980s
17
48
1990s
21
28
2000s
12
10
2010s
11
9
2020s
13
·

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1898, the latest in 2025. Period of observation: 1898-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.0°F — Jan 15, 1932 5.0°F — Jan 21, 1985 3.60 in — Jan 14, 1995
February 87.1°F — Feb 17, 1989 -5.1°F — Feb 14, 1899 3.96 in — Feb 13, 2024
March 98.1°F — Mar 23, 1907 19.0°F — Mar 14, 1998 4.45 in — Mar 13, 1980
April 96.1°F — Apr 27, 1990 27.0°F — Apr 7, 2007 3.89 in — Apr 16, 1958
May 100.9°F — May 26, 1911 33.1°F — May 2, 1963 4.70 in — May 29, 1965
June 104.0°F — Jun 27, 1952 45.0°F — Jun 1, 1930 8.80 in — Jun 27, 1941
July 104.0°F — Jul 3, 1931 51.1°F — Jul 13, 1974 7.90 in — Jul 2, 1966
August 106.0°F — Aug 18, 1954 53.1°F — Aug 2, 1966 10.23 in — Aug 12, 1940
September 107.1°F — Sep 21, 1925 39.9°F — Sep 30, 1967 7.30 in — Sep 18, 1928
October 99.0°F — Oct 6, 1954 3.9°F — Oct 20, 1988 9.20 in — Oct 4, 2015
November 90.0°F — Nov 1, 1961 12.0°F — Nov 25, 1970 4.41 in — Nov 6, 1963
December 87.1°F — Dec 18, 2008 9.0°F — Dec 26, 1983 4.40 in — Dec 6, 2016

Click a month to see every daily record for that month in Summerville.