All-time weather records — South Mountain, TX

Record high
111.9°F
July 23, 2018
Record low
-8.0°F
February 16, 2021
Wettest day
8.67 in
September 8, 2010

Climate change signal in South Mountain

4.6%

of South Mountain's all-time daily heat records were set in the last decade (17 of 366 records since 2015).

4.9%

of all-time daily cold records were set in the last decade (18 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 #
1900s
16
19
1910s
21
47
1920s
8
8
1930s
50
9
1940s
85
29
1950s
58
33
1960s
41
34
1970s
12
60
1980s
11
37
1990s
14
40
2000s
22
24
2010s
24
21
2020s
4
5

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 1904, the latest in 2020. Period of observation: 1900-2021.

Records by month

Month Hottest day Coldest day Wettest day
January 95.0°F — Jan 23, 1943 -6.0°F — Jan 31, 1949 4.00 in — Jan 10, 2021
February 100.0°F — Feb 22, 1996 -8.0°F — Feb 16, 2021 3.07 in — Feb 21, 1928
March 98.1°F — Mar 16, 1936 12.9°F — Mar 2, 1980 5.20 in — Mar 20, 2012
April 102.0°F — Apr 7, 1904 27.0°F — Apr 13, 1940 5.25 in — Apr 7, 1900
May 102.0°F — May 31, 1959 33.1°F — May 1, 1903 7.13 in — May 1, 1956
June 108.0°F — Jun 21, 1936 48.0°F — Jun 1, 1964 8.35 in — Jun 16, 1964
July 111.9°F — Jul 23, 2018 54.0°F — Jul 12, 1999 5.78 in — Jul 25, 1971
August 111.9°F — Aug 9, 1962 53.1°F — Aug 28, 1992 8.00 in — Aug 17, 2016
September 111.9°F — Sep 5, 2000 36.0°F — Sep 27, 1942 8.67 in — Sep 8, 2010
October 104.0°F — Oct 2, 1938 21.0°F — Oct 30, 1917 8.00 in — Oct 24, 2015
November 93.0°F — Nov 1, 1955 12.9°F — Nov 29, 1976 4.50 in — Nov 17, 2004
December 90.0°F — Dec 30, 1951 -4.0°F — Dec 23, 1989 4.90 in — Dec 21, 1997

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