Frost history / Groveland 2, CA
Groveland 2, CA: frost dates by year
Last spring and first fall frost at NOAA station USC00043669, 2000 to 2024, measured from daily minimum temperatures.
Elevation 2,800 ft, 37.844, -120.226. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 30 | Oct 29 |
| Earliest | Mar 27 (2020) | Sep 16 (2006) |
| Latest | May 23 (2013) | Nov 26 (2001) |
| Trend | 4.4 days earlier per decade | 2.2 days earlier per decade |
| Years with data | 24 | 22 |
At 28°F (hard freeze) the median last spring date is Apr 7 and the median first fall date is Nov 11.
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 | May 6 | no data | Apr 7 | no data |
| 2023 | Apr 20 | Oct 27 | Apr 20 | Oct 29 |
| 2022 | May 11 | Oct 23 | May 11 | Nov 10 |
| 2021 | Apr 27 | Oct 12 | Mar 24 | Nov 24 |
| 2020 | Mar 27 | Nov 7 | Feb 10 | Nov 9 |
| 2019 | May 20 | Oct 1 | Mar 25 | Nov 26 |
| 2018 | Apr 19 | Nov 9 | Mar 27 | Nov 11 |
| 2017 | Apr 15 | Oct 4 | Apr 9 | Dec 4 |
| 2016 | Mar 31 | Nov 17 | Mar 30 | Nov 17 |
| 2015 | Apr 16 | no data | Apr 2 | no data |
| 2014 | Apr 23 | no data | Feb 6 | no data |
| 2013 | May 23 | Oct 30 | Mar 11 | Dec 4 |
| 2012 | Apr 9 | Nov 9 | Apr 7 | Nov 11 |
| 2011 | May 16 | Nov 5 | Apr 15 | Nov 5 |
| 2010 | May 23 | Oct 27 | Apr 7 | Nov 24 |
| 2009 | Apr 30 | Oct 5 | Apr 16 | Oct 29 |
| 2008 | May 2 | Oct 11 | Apr 25 | Oct 11 |
| 2007 | May 6 | Oct 6 | Apr 20 | Oct 6 |
| 2006 | Apr 19 | Sep 16 | Mar 22 | Nov 11 |
| 2005 | May 10 | Nov 5 | Apr 15 | Nov 27 |
| 2004 | Apr 18 | Oct 21 | Feb 28 | Nov 21 |
| 2003 | May 10 | Oct 30 | Apr 5 | Nov 4 |
| 2002 | May 1 | Nov 1 | Apr 19 | Dec 22 |
| 2001 | May 3 | Nov 26 | Apr 11 | Nov 26 |
| 2000 | no data | Oct 30 | no data | Nov 11 |
"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.