Frost history / Moosehead, ME
Moosehead, ME: frost dates by year
Last spring and first fall frost at NOAA station USC00175460, 2011 to 2025, measured from daily minimum temperatures.
Elevation 1,037 ft, 45.585, -69.719. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 18 | Sep 30 |
| Earliest | May 3 (2011) | Sep 10 (2018) |
| Latest | May 29 (2014) | Oct 25 (2021) |
| Trend | 3.6 days earlier per decade | 6.9 days later per decade |
| Years with data | 15 | 15 |
At 28°F (hard freeze) the median last spring date is May 1 and the median first fall date is Oct 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 |
|---|---|---|---|---|
| 2025 | May 12 | Sep 20 | May 1 | Oct 10 |
| 2024 | May 11 | Oct 12 | Apr 27 | Oct 18 |
| 2023 | May 18 | Oct 24 | Apr 29 | Oct 30 |
| 2022 | May 24 | Oct 1 | May 10 | Oct 3 |
| 2021 | May 7 | Oct 25 | May 7 | Oct 30 |
| 2020 | May 13 | Sep 18 | Apr 26 | Sep 20 |
| 2019 | May 28 | Sep 19 | May 1 | Oct 5 |
| 2018 | May 18 | Sep 10 | May 13 | Oct 20 |
| 2017 | May 21 | Oct 3 | Apr 25 | Oct 17 |
| 2016 | May 19 | Sep 30 | May 1 | Oct 15 |
| 2015 | May 23 | Sep 26 | Apr 25 | Oct 4 |
| 2014 | May 29 | Sep 19 | May 9 | Sep 19 |
| 2013 | May 28 | Oct 9 | Apr 28 | Oct 24 |
| 2012 | May 18 | Sep 20 | May 8 | Oct 9 |
| 2011 | May 3 | Oct 6 | May 2 | Oct 6 |
"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 1991–2020 frost probabilities.