All-time weather records — Merced, CA

Record high
114.1°F
July 17, 1925
Record low
8.1°F
December 1, 1999
Wettest day
2.20 in
January 30, 1911

Climate change signal in Merced

5.5%

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

0.5%

of all-time daily cold records were set in the last decade (2 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
3
·
1900s
87
128
1910s
19
14
1920s
39
30
1930s
36
24
1940s
13
37
1950s
28
22
1960s
26
15
1970s
18
45
1980s
26
10
1990s
16
21
2000s
31
18
2010s
9
2
2020s
15
·

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 1899, the latest in 2026. Period of observation: 1899-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.9°F — Jan 12, 2016 12.9°F — Jan 13, 2007 2.20 in — Jan 30, 1911
February 84.0°F — Feb 19, 1930 19.9°F — Feb 9, 1904 2.11 in — Feb 22, 1907
March 88.0°F — Mar 16, 2015 19.9°F — Mar 7, 1908 2.20 in — Mar 9, 1911
April 98.1°F — Apr 14, 1985 21.9°F — Apr 3, 1999 1.54 in — Apr 4, 1925
May 109.0°F — May 25, 1928 30.0°F — May 16, 1978 1.29 in — May 21, 1921
June 111.0°F — Jun 15, 1961 27.0°F — Jun 7, 1998 0.62 in — Jun 6, 1934
July 114.1°F — Jul 17, 1925 39.0°F — Jul 29, 1926 0.42 in — Jul 9, 1974
August 114.1°F — Aug 8, 1905 35.1°F — Aug 24, 1979 0.47 in — Aug 12, 1965
September 109.9°F — Sep 8, 1904 26.1°F — Sep 25, 1983 1.25 in — Sep 23, 1904
October 102.0°F — Oct 2, 2010 28.0°F — Oct 14, 1905 1.57 in — Oct 25, 2021
November 91.0°F — Nov 6, 2010 21.0°F — Nov 30, 1906 2.02 in — Nov 13, 1981
December 75.9°F — Dec 7, 1912 8.1°F — Dec 1, 1999 2.10 in — Dec 23, 1955

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