All-time weather records — Healdsburg, CA

Record high
117.0°F
September 6, 2022
Record low
0.0°F
February 17, 2003
Wettest day
8.18 in
December 3, 1980

Climate change signal in Healdsburg

10.1%

of Healdsburg's all-time daily heat records were set in the last decade (37 of 366 records since 2015).

0.8%

of all-time daily cold records were set in the last decade (3 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
18
1900s
43
106
1910s
42
46
1920s
44
74
1930s
28
38
1940s
11
30
1950s
20
13
1960s
31
2
1970s
37
7
1980s
24
5
1990s
17
8
2000s
28
14
2010s
11
3
2020s
28
2

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 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.9°F — Jan 8, 1962 18.0°F — Jan 8, 1937 6.36 in — Jan 23, 1916
February 89.1°F — Feb 3, 1920 0.0°F — Feb 17, 2003 6.53 in — Feb 26, 2019
March 95.0°F — Mar 18, 1914 27.0°F — Mar 5, 1918 6.26 in — Mar 9, 1995
April 102.0°F — Apr 10, 1908 24.1°F — Apr 3, 1901 3.25 in — Apr 27, 1953
May 108.0°F — May 31, 1912 30.0°F — May 16, 1929 5.38 in — May 18, 2005
June 116.1°F — Jun 3, 1912 0.0°F — Jun 18, 2002 2.07 in — Jun 2, 1967
July 116.1°F — Jul 7, 1905 0.0°F — Jul 12, 2002 1.59 in — Jul 8, 1974
August 114.1°F — Aug 6, 1913 0.0°F — Aug 1, 2002 2.03 in — Aug 28, 1954
September 117.0°F — Sep 6, 2022 30.0°F — Sep 8, 1901 4.52 in — Sep 18, 1959
October 108.0°F — Oct 3, 1980 0.0°F — Oct 5, 2002 6.52 in — Oct 24, 2021
November 98.1°F — Nov 11, 1906 25.0°F — Nov 13, 1916 7.78 in — Nov 20, 2024
December 82.9°F — Dec 26, 1967 14.0°F — Dec 22, 1990 8.18 in — Dec 3, 1980

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