All-time weather records — Fitchburg, MA
Climate change signal in Fitchburg
of Fitchburg's all-time daily heat records were set in the last decade (366 of 366 records since 2015).
of all-time daily cold records were set in the last decade (366 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 | # |
|---|---|---|---|---|
| 2010s | 36 | 68 | ||
| 2020s | 330 | 298 |
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 2019, the latest in 2026. Period of observation: 2016-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 66.9°F — Jan 13, 2020 | -11.9°F — Jan 22, 2025 | 2.57 in — Jan 10, 2024 |
| February | 66.0°F — Feb 24, 2022 | -16.1°F — Feb 4, 2023 | 2.37 in — Feb 4, 2022 |
| March | 73.0°F — Mar 26, 2021 | -2.9°F — Mar 7, 2019 | 2.28 in — Mar 14, 2023 |
| April | 91.9°F — Apr 15, 2023 | 19.0°F — Apr 9, 2025 | 2.47 in — Apr 30, 2021 |
| May | 91.9°F — May 23, 2022 | 3.9°F — May 3, 2024 | 2.21 in — May 5, 2025 |
| June | 100.0°F — Jun 25, 2025 | 37.0°F — Jun 1, 2020 | 1.23 in — Jun 29, 2020 |
| July | 99.0°F — Jul 30, 2025 | 48.0°F — Jul 22, 2025 | 2.95 in — Jul 23, 2019 |
| August | 93.9°F — Aug 7, 2022 | 5.0°F — Aug 26, 2025 | 2.80 in — Aug 3, 2017 |
| September | 91.0°F — Sep 8, 2023 | 30.9°F — Sep 21, 2020 | 3.94 in — Sep 12, 2023 |
| October | 84.9°F — Oct 6, 2025 | 16.0°F — Oct 31, 2020 | 4.10 in — Oct 30, 2017 |
| November | 80.1°F — Nov 1, 2024 | 12.0°F — Nov 14, 2019 | 1.94 in — Nov 3, 2018 |
| December | 62.1°F — Dec 12, 2021 | -2.9°F — Dec 9, 2025 | 2.62 in — Dec 23, 2022 |
Click a month to see every daily record for that month in Fitchburg.