Frost history / Redding Muni Ap, CA
Redding Muni Ap, CA: frost dates by year
Last spring and first fall frost at NOAA station USW00024257, 1987 to 2024, measured from daily minimum temperatures.
Elevation 497 ft, 40.517, -122.299. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 5 | Nov 22 |
| Earliest | Jan 14 (2005) | Oct 31 (2019) |
| Latest | Apr 24 (2008) | Dec 21 (1995) |
| Trend | 0.5 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 38, 1 with no freeze | 38 |
At 28°F (hard freeze) the median last spring date is Feb 9 and the median first fall date is Dec 4.
The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.
Chart
Last spring frost (32°F)
First fall frost (32°F)
Dots are single years. The gray line is the median, the green line the fitted trend.
Year by year
| Year | Last spring 32°F | First fall 32°F | Last spring 28°F | First fall 28°F |
|---|---|---|---|---|
| 2024 | Feb 8 | Nov 28 | none | none |
| 2023 | Apr 4 | Nov 26 | Feb 25 | none |
| 2022 | Apr 12 | Nov 20 | Feb 25 | Dec 18 |
| 2021 | Feb 27 | Dec 10 | Jan 26 | none |
| 2020 | Mar 19 | Nov 10 | none | Nov 11 |
| 2019 | Feb 23 | Oct 31 | none | none |
| 2018 | Mar 5 | Nov 10 | Feb 25 | none |
| 2017 | Mar 2 | Dec 8 | none | Dec 12 |
| 2016 | none | Dec 5 | none | Dec 25 |
| 2015 | Jan 14 | Nov 28 | Jan 2 | Nov 29 |
| 2014 | Feb 5 | Nov 17 | Feb 5 | none |
| 2013 | Feb 27 | Nov 24 | Jan 22 | Dec 5 |
| 2012 | Apr 6 | Nov 10 | Jan 17 | Dec 15 |
| 2011 | Mar 1 | Nov 8 | Feb 27 | Nov 19 |
| 2010 | Apr 6 | Nov 23 | none | Nov 24 |
| 2009 | Apr 15 | Nov 13 | Feb 10 | Dec 5 |
| 2008 | Apr 24 | Dec 4 | none | Dec 4 |
| 2007 | Mar 1 | Nov 24 | Feb 2 | Nov 24 |
| 2006 | Mar 10 | Nov 24 | Mar 10 | Dec 17 |
| 2005 | Jan 14 | Nov 26 | Jan 13 | Dec 3 |
| 2004 | Feb 12 | Nov 23 | Jan 23 | Dec 5 |
| 2003 | Mar 4 | Nov 1 | Feb 9 | Dec 27 |
| 2002 | Mar 18 | Nov 2 | Feb 4 | none |
| 2001 | Apr 9 | Dec 4 | Feb 15 | none |
| 2000 | Jan 29 | Nov 11 | Jan 3 | Nov 11 |
| 1999 | Apr 9 | Nov 22 | Apr 9 | Dec 16 |
| 1998 | Mar 10 | Nov 9 | none | Dec 4 |
| 1997 | Mar 5 | Dec 2 | Mar 5 | Dec 26 |
| 1996 | Mar 6 | Nov 16 | Feb 25 | Dec 2 |
| 1995 | Mar 24 | Dec 21 | Feb 15 | Dec 25 |
| 1994 | Feb 22 | Nov 14 | Feb 12 | Nov 14 |
| 1993 | Feb 28 | Nov 15 | Jan 12 | Nov 20 |
| 1992 | Feb 5 | Nov 11 | Jan 21 | Dec 5 |
| 1991 | Mar 27 | Nov 16 | Jan 30 | Dec 4 |
| 1990 | Mar 13 | Nov 20 | Mar 13 | Nov 24 |
| 1989 | Mar 3 | Nov 28 | Mar 3 | Nov 28 |
| 1988 | Mar 13 | Dec 1 | Feb 5 | Dec 17 |
| 1987 | Mar 22 | Nov 27 | Feb 26 | Nov 29 |
"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.