Frost history / Grand Junction Wfo, CO
Grand Junction Wfo, CO: frost dates by year
Last spring and first fall frost at NOAA station USC00053486, 2012 to 2025, measured from daily minimum temperatures.
Elevation 4,826 ft, 39.120, -108.525. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 18 | Oct 26 |
| Earliest | Apr 2 (2016) | Oct 4 (2013) |
| Latest | May 13 (2014) | Nov 17 (2016) |
| Trend | 3.0 days earlier per decade | 4.9 days later per decade |
| Years with data | 14 | 14 |
At 28°F (hard freeze) the median last spring date is Apr 7 and the median first fall date is Nov 8.
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 29 | Apr 2 | Dec 1 |
| 2024 | Apr 7 | Nov 1 | Apr 7 | Nov 7 |
| 2023 | Apr 21 | Oct 29 | Apr 21 | Oct 30 |
| 2022 | Apr 14 | Oct 24 | Apr 14 | Nov 10 |
| 2021 | Apr 20 | Oct 27 | Apr 20 | Nov 18 |
| 2020 | Apr 17 | Oct 25 | Apr 14 | Oct 25 |
| 2019 | Apr 12 | Oct 11 | Mar 16 | Oct 11 |
| 2018 | Apr 18 | Oct 14 | Mar 19 | Oct 15 |
| 2017 | Apr 28 | Oct 10 | Apr 6 | Nov 8 |
| 2016 | Apr 2 | Nov 17 | Mar 27 | Nov 18 |
| 2015 | Apr 16 | Nov 5 | Mar 6 | Nov 12 |
| 2014 | May 13 | Oct 28 | Apr 14 | Nov 11 |
| 2013 | Apr 19 | Oct 4 | Apr 19 | Nov 5 |
| 2012 | Apr 7 | Oct 25 | Apr 7 | Oct 26 |
"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.