Frost history / Bridgewater, MA
Bridgewater, MA: frost dates by year
Last spring and first fall frost at NOAA station USC00190840, 2007 to 2025, measured from daily minimum temperatures.
Elevation 40 ft, 41.954, -70.957. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 28 | Oct 12 |
| Earliest | Apr 10 (2021) | Sep 16 (2007) |
| Latest | May 19 (2023) | Nov 4 (2021) |
| Trend | 3.3 days earlier per decade | 7.4 days later per decade |
| Years with data | 15 | 17 |
At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 29.
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 10 | Apr 19 | Oct 10 |
| 2024 | no data | Oct 13 | no data | Oct 29 |
| 2023 | May 19 | no data | May 18 | no data |
| 2022 | May 2 | Oct 12 | Apr 19 | Nov 15 |
| 2021 | Apr 10 | Nov 4 | Apr 5 | Nov 4 |
| 2019 | Apr 24 | Oct 6 | Apr 24 | Nov 2 |
| 2018 | Apr 25 | Oct 19 | Apr 23 | Oct 19 |
| 2017 | Apr 20 | Nov 1 | Apr 4 | Nov 9 |
| 2016 | May 10 | Sep 26 | Apr 14 | Oct 15 |
| 2015 | Apr 27 | Sep 27 | Apr 16 | Oct 18 |
| 2014 | Apr 28 | Sep 20 | Apr 21 | Nov 10 |
| 2013 | May 15 | Oct 14 | Apr 22 | Oct 25 |
| 2012 | Apr 30 | Oct 13 | Apr 30 | Oct 13 |
| 2011 | no data | Oct 24 | no data | Oct 31 |
| 2010 | May 13 | Oct 10 | Mar 30 | Nov 2 |
| 2009 | Apr 20 | Oct 12 | Apr 17 | Oct 20 |
| 2008 | May 2 | Oct 8 | May 2 | Oct 24 |
| 2007 | no data | Sep 16 | no data | Oct 29 |
"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.