Frost history / Sagemoor, WA
Sagemoor, WA: frost dates by year
Last spring and first fall frost at NOAA station USC00457247, 2010 to 2025, measured from daily minimum temperatures.
Elevation 595 ft, 46.395, -119.071. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 26 | Oct 14 |
| Earliest | Mar 29 (2016) | Oct 2 (2019) |
| Latest | May 17 (2011) | Nov 8 (2014) |
| Trend | 11.7 days earlier per decade | 4.8 days earlier per decade |
| Years with data | 14 | 15 |
At 28°F (hard freeze) the median last spring date is Apr 9 and the median first fall date is Oct 29.
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 | Apr 19 | Oct 15 | Apr 4 | Nov 21 |
| 2024 | May 1 | Oct 6 | Mar 15 | Oct 29 |
| 2022 | Apr 22 | Nov 3 | Apr 7 | Nov 3 |
| 2021 | Apr 23 | Oct 7 | Apr 14 | Oct 12 |
| 2020 | May 4 | Oct 22 | Apr 17 | Oct 22 |
| 2019 | Apr 15 | Oct 2 | Mar 20 | Oct 2 |
| 2018 | Apr 23 | Oct 5 | Apr 4 | Nov 7 |
| 2017 | Apr 16 | Oct 9 | Apr 12 | Oct 14 |
| 2016 | Mar 29 | Oct 12 | Mar 29 | Nov 29 |
| 2015 | no data | Nov 4 | no data | Nov 4 |
| 2014 | Apr 30 | Nov 8 | Apr 14 | Nov 11 |
| 2013 | May 2 | Oct 14 | May 1 | Oct 15 |
| 2012 | May 11 | Oct 5 | Apr 8 | Nov 9 |
| 2011 | May 17 | Oct 25 | May 1 | Oct 25 |
| 2010 | May 9 | Oct 17 | Apr 10 | Oct 17 |
"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.