Frost history / Cascade Locks, OR
Cascade Locks, OR: frost dates by year
Last spring and first fall frost at NOAA station USC00351407, 1951 to 2025, measured from daily minimum temperatures.
Elevation 142 ft, 45.678, -121.874. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 11 | Nov 16 |
| Earliest | Mar 9 (2025) | Oct 26 (2020) |
| Latest | May 11 (1953) | Dec 7 (2016) |
| Trend | 3.8 days earlier per decade | 1.3 days later per decade |
| Years with data | 15 | 15 |
At 28°F (hard freeze) the median last spring date is Mar 5 and the median first fall date is Nov 24.
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 | Mar 9 | Dec 1 | Mar 7 | none |
| 2024 | Apr 18 | Nov 28 | Mar 8 | none |
| 2023 | Apr 15 | Nov 24 | Feb 26 | Nov 29 |
| 2022 | Apr 11 | Nov 9 | Mar 13 | Nov 20 |
| 2021 | Apr 11 | Nov 22 | Apr 11 | Dec 28 |
| 2020 | Mar 23 | Oct 26 | Mar 10 | Oct 27 |
| 2019 | Apr 29 | Oct 28 | Mar 14 | Oct 31 |
| 2018 | Apr 4 | Nov 14 | Mar 6 | none |
| 2017 | Apr 4 | Nov 19 | Feb 15 | Dec 21 |
| 2016 | Mar 30 | Dec 7 | Jan 7 | Dec 7 |
| 2015 | Apr 3 | Nov 23 | Mar 4 | Nov 23 |
| 2014 | Mar 23 | Nov 12 | Mar 3 | Nov 14 |
| 1953 | May 11 | Nov 2 | Feb 25 | none |
| 1952 | May 2 | Nov 9 | Feb 13 | Nov 24 |
| 1951 | Apr 21 | Nov 16 | Mar 5 | Dec 7 |
"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.