Frost history / Minatare Dam (Usbr), NE
Minatare Dam (Usbr), NE: frost dates by year
Last spring and first fall frost at NOAA station USC00255555, 1951 to 2025, measured from daily minimum temperatures.
Elevation 4,144 ft, 41.918, -103.484. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 12 | Oct 5 |
| Earliest | Apr 22 (2025) | Sep 8 (2020) |
| Latest | May 23 (2019) | Oct 25 (2024) |
| Trend | little change (less than half a day per decade) | 1.3 days later per decade |
| Years with data | 12 | 14 |
At 28°F (hard freeze) the median last spring date is Apr 18 and the median first fall date is Oct 13.
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 22 | Oct 19 | Apr 19 | Oct 19 |
| 2024 | no data | Oct 25 | no data | Oct 31 |
| 2022 | May 22 | Oct 16 | May 21 | Oct 26 |
| 2021 | May 4 | Oct 13 | Apr 21 | Oct 14 |
| 2020 | May 10 | Sep 8 | Apr 17 | Oct 12 |
| 2019 | May 23 | Oct 3 | May 2 | Oct 3 |
| 2018 | no data | Sep 26 | no data | Oct 6 |
| 2017 | May 4 | no data | Mar 31 | no data |
| 2016 | May 17 | Oct 5 | Mar 31 | Oct 7 |
| 2015 | May 20 | Oct 16 | Apr 10 | Oct 29 |
| 2014 | May 14 | Sep 12 | Apr 15 | Oct 28 |
| 2013 | May 5 | Oct 4 | May 3 | Oct 16 |
| 2012 | May 12 | Oct 4 | Mar 9 | Oct 6 |
| 1952 | May 11 | Oct 6 | Apr 23 | Oct 6 |
| 1951 | no data | Sep 22 | no data | Sep 27 |
"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.