Frost history / Moose 1 Nne, WY
Moose 1 Nne, WY: frost dates by year
Last spring and first fall frost at NOAA station USW00004131, 2004 to 2024, measured from daily minimum temperatures.
Elevation 6,466 ft, 43.661, -110.712. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 23 | Aug 29 |
| Earliest | Jun 1 (2006) | Aug 9 (2009) |
| Latest | Jul 29 (2015) | Sep 19 (2013) |
| Trend | little change (less than half a day per decade) | 1.5 days later per decade |
| Years with data | 20 | 21 |
At 28°F (hard freeze) the median last spring date is Jun 3 and the median first fall date is Sep 10.
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 | Jul 3 | Aug 29 | Jun 19 | Oct 1 |
| 2023 | Jun 22 | Aug 31 | May 6 | Sep 24 |
| 2022 | Jun 21 | Sep 10 | May 25 | Sep 10 |
| 2021 | Jun 12 | Aug 29 | Jun 11 | Sep 4 |
| 2020 | Jun 19 | Aug 31 | May 9 | Sep 8 |
| 2019 | Jun 22 | Aug 17 | Jun 22 | Sep 17 |
| 2018 | Jun 13 | Aug 29 | Jun 12 | Sep 18 |
| 2017 | Jun 30 | Sep 16 | May 27 | Sep 17 |
| 2016 | Jun 26 | Aug 20 | May 29 | Sep 6 |
| 2015 | Jul 29 | Aug 23 | May 11 | Sep 6 |
| 2014 | Jun 15 | Sep 2 | Jun 15 | Sep 4 |
| 2013 | Jun 23 | Sep 19 | Jun 15 | Sep 20 |
| 2012 | Jun 27 | Sep 8 | Jun 20 | Sep 12 |
| 2011 | Jun 27 | Sep 2 | Jun 4 | Sep 18 |
| 2010 | Jul 14 | Aug 24 | May 31 | Sep 6 |
| 2009 | Jun 23 | Aug 9 | May 22 | Sep 8 |
| 2008 | Jul 12 | Aug 27 | Jun 9 | Aug 27 |
| 2007 | Jun 26 | Sep 10 | Jun 8 | Sep 10 |
| 2006 | Jun 1 | Aug 31 | Jun 1 | Aug 31 |
| 2005 | Jun 14 | Aug 26 | May 27 | Aug 31 |
| 2004 | no data | Aug 28 | no data | Sep 21 |
"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.