All-time weather records — Grass Valley, OR

Record high
113.0°F
June 30, 2021
Record low
-24.0°F
January 28, 1952
Wettest day
2.25 in
November 20, 1921

Climate change signal in Grass Valley

13.4%

of Grass Valley's all-time daily heat records were set in the last decade (49 of 366 records since 2015).

8.5%

of all-time daily cold records were set in the last decade (31 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
1
3
1910s
15
8
1920s
27
35
1930s
64
29
1940s
35
15
1950s
17
57
1960s
26
44
1970s
31
45
1980s
24
41
1990s
31
27
2000s
30
21
2010s
37
28
2020s
28
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 2024. Period of observation: 1897-2025.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 26, 2015 -24.0°F — Jan 28, 1952 1.67 in — Jan 9, 1953
February 68.0°F — Feb 26, 1932 -23.1°F — Feb 2, 1950 1.14 in — Feb 10, 1961
March 75.0°F — Mar 23, 1939 1.0°F — Mar 5, 2019 0.66 in — Mar 31, 2012
April 89.1°F — Apr 28, 1926 18.0°F — Apr 2, 2005 1.21 in — Apr 21, 1988
May 100.0°F — May 31, 1986 18.0°F — May 8, 1982 1.52 in — May 11, 1977
June 113.0°F — Jun 30, 2021 27.0°F — Jun 3, 1976 1.21 in — Jun 10, 1956
July 111.0°F — Jul 27, 1939 34.0°F — Jul 2, 1954 0.80 in — Jul 6, 1923
August 109.9°F — Aug 1, 2022 30.9°F — Aug 29, 1980 0.69 in — Aug 21, 1979
September 100.0°F — Sep 2, 1998 21.0°F — Sep 24, 1926 1.41 in — Sep 28, 1947
October 88.0°F — Oct 1, 1991 7.0°F — Oct 31, 2002 1.25 in — Oct 1, 2005
November 72.0°F — Nov 7, 2006 -15.0°F — Nov 24, 1985 2.25 in — Nov 20, 1921
December 64.9°F — Dec 9, 2015 -20.0°F — Dec 13, 1919 1.46 in — Dec 18, 1929

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