Frost history / Pine Bluffs 1ESE, WY
Pine Bluffs 1ESE, WY: frost dates by year
Last spring and first fall frost at NOAA station USC00487236, 2012 to 2024, measured from daily minimum temperatures.
Elevation 5,058 ft, 41.180, -104.057. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 13 | Oct 3 |
| Earliest | Apr 25 (2018) | Sep 7 (2020) |
| Latest | May 23 (2017) | Oct 16 (2015) |
| Trend | little change (less than half a day per decade) | 3.3 days earlier per decade |
| Years with data | 11 | 10 |
At 28°F (hard freeze) the median last spring date is May 3 and the median first fall date is Oct 7.
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 | no data | Oct 6 | no data | Oct 26 |
| 2023 | May 2 | no data | May 1 | no data |
| 2022 | May 21 | no data | May 21 | no data |
| 2021 | May 13 | no data | Apr 23 | no data |
| 2020 | May 11 | Sep 7 | Apr 21 | Sep 9 |
| 2019 | May 22 | Oct 2 | May 21 | Oct 2 |
| 2018 | Apr 25 | Sep 26 | Apr 24 | Oct 5 |
| 2017 | May 23 | Oct 3 | May 3 | Oct 10 |
| 2016 | May 3 | Oct 5 | May 2 | Oct 20 |
| 2015 | May 22 | Oct 16 | May 12 | Oct 24 |
| 2014 | May 14 | Sep 12 | May 13 | Oct 29 |
| 2013 | May 6 | Oct 3 | May 5 | Oct 5 |
| 2012 | no data | Oct 3 | no data | Oct 3 |
"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.