Frost history / Colville, WA
Colville, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00451630, 1951 to 2025, measured from daily minimum temperatures.
Elevation 1,554 ft, 48.568, -117.936. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 8 | Oct 1 |
| Earliest | Mar 29 (2016) | Sep 9 (2020) |
| Latest | Jun 13 (1952) | Oct 15 (2015) |
| Trend | 4.0 days earlier per decade | 1.6 days earlier per decade |
| Years with data | 26 | 31 |
At 28°F (hard freeze) the median last spring date is Apr 20 and the median first fall date is Oct 12.
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 |
|---|---|---|---|---|
| 2025 | no data | Oct 2 | no data | Oct 5 |
| 2024 | May 29 | Sep 20 | Apr 30 | Oct 2 |
| 2023 | Apr 21 | Sep 29 | Apr 20 | Oct 25 |
| 2022 | no data | Sep 20 | no data | Nov 5 |
| 2021 | May 21 | Sep 16 | May 19 | Oct 8 |
| 2020 | May 5 | Sep 9 | May 5 | Oct 16 |
| 2019 | May 1 | Sep 28 | May 1 | Oct 2 |
| 2018 | no data | Sep 18 | no data | Oct 5 |
| 2017 | May 15 | Sep 15 | Apr 4 | Sep 17 |
| 2016 | Mar 29 | Sep 12 | Mar 19 | Oct 10 |
| 2015 | Apr 27 | Oct 15 | Apr 15 | Oct 24 |
| 2014 | Apr 29 | Sep 12 | Apr 2 | Nov 11 |
| 2013 | May 2 | Oct 3 | May 1 | Oct 11 |
| 2012 | May 11 | Oct 3 | Apr 8 | Oct 4 |
| 2011 | May 4 | Oct 8 | Apr 20 | Oct 25 |
| 2010 | May 24 | Oct 14 | Apr 10 | Oct 16 |
| 2009 | May 15 | Oct 1 | Apr 24 | Oct 6 |
| 2008 | May 9 | Oct 8 | May 1 | Oct 8 |
| 2007 | no data | Oct 5 | no data | Oct 26 |
| 2005 | May 1 | no data | Apr 15 | no data |
| 2004 | no data | Sep 21 | no data | Oct 24 |
| 2002 | May 11 | Oct 1 | May 9 | Oct 2 |
| 2001 | May 6 | Oct 5 | Apr 14 | Oct 5 |
| 2000 | May 13 | Sep 23 | Apr 8 | Sep 23 |
| 1999 | May 11 | Sep 27 | May 8 | Sep 27 |
| 1998 | Apr 26 | Oct 4 | Apr 15 | Oct 18 |
| 1997 | Apr 22 | Oct 7 | Apr 12 | Oct 12 |
| 1996 | May 10 | Sep 23 | May 8 | Oct 17 |
| 1995 | no data | Oct 1 | no data | Oct 19 |
| 1994 | Apr 29 | Oct 5 | Mar 30 | Oct 22 |
| 1952 | Jun 13 | Oct 5 | May 5 | Oct 14 |
| 1951 | Jun 1 | Sep 30 | Apr 25 | Oct 15 |
"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.