All-time weather records — Greenfield, MA
Climate change signal in Greenfield
of Greenfield's all-time daily heat records were set in the last decade (219 of 366 records since 2015).
of all-time daily cold records were set in the last decade (175 of 366 records since 2015).
If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:
| Decade | Heat records set | # | Cold records set | # |
|---|---|---|---|---|
| 2000s | 59 | 122 | ||
| 2010s | 190 | 184 | ||
| 2020s | 117 | 60 |
Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 2005, the latest in 2026. Period of observation: 2005-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 71.1°F — Jan 7, 2007 | -17.0°F — Jan 7, 2018 | 2.50 in — Jan 10, 2024 |
| February | 75.9°F — Feb 22, 2018 | -17.0°F — Feb 24, 2015 | 3.00 in — Feb 10, 2021 |
| March | 82.9°F — Mar 23, 2012 | -8.0°F — Mar 1, 2015 | 3.26 in — Mar 7, 2011 |
| April | 91.9°F — Apr 15, 2023 | 12.9°F — Apr 6, 2016 | 2.80 in — Apr 1, 2010 |
| May | 93.9°F — May 19, 2017 | 28.0°F — May 1, 2008 | 2.30 in — May 13, 2006 |
| June | 97.0°F — Jun 25, 2025 | 34.0°F — Jun 1, 2009 | 3.15 in — Jun 26, 2014 |
| July | 97.0°F — Jul 7, 2010 | 39.0°F — Jul 5, 2007 | 4.65 in — Jul 22, 2023 |
| August | 97.0°F — Aug 5, 2022 | 35.1°F — Aug 28, 2008 | 3.56 in — Aug 12, 2018 |
| September | 93.0°F — Sep 3, 2010 | 30.0°F — Sep 21, 2008 | 3.55 in — Sep 19, 2012 |
| October | 84.9°F — Oct 5, 2023 | 21.9°F — Oct 19, 2015 | 2.60 in — Oct 1, 2010 |
| November | 79.0°F — Nov 1, 2024 | 3.9°F — Nov 23, 2018 | 2.80 in — Nov 3, 2018 |
| December | 66.0°F — Dec 2, 2006 | -8.0°F — Dec 5, 2025 | 3.23 in — Dec 13, 2010 |
Click a month to see every daily record for that month in Greenfield.