All-time weather records — Nashua, NH
Climate change signal in Nashua
of Nashua's all-time daily heat records were set in the last decade (359 of 366 records since 2015).
of all-time daily cold records were set in the last decade (361 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 | 188 | 194 | ||
| 2020s | 178 | 172 |
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 2014, the latest in 2026. Period of observation: 2014-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 66.9°F — Jan 13, 2020 | -15.0°F — Jan 2, 2018 | 2.12 in — Jan 10, 2024 |
| February | 78.1°F — Feb 22, 2018 | -15.0°F — Feb 4, 2023 | 1.60 in — Feb 4, 2022 |
| March | 78.1°F — Mar 10, 2016 | -2.9°F — Mar 1, 2015 | 1.69 in — Mar 24, 2024 |
| April | 91.0°F — Apr 15, 2023 | 12.9°F — Apr 6, 2016 | 1.90 in — Apr 30, 2021 |
| May | 96.1°F — May 19, 2017 | 25.0°F — May 18, 2023 | 1.95 in — May 9, 2025 |
| June | 102.0°F — Jun 24, 2025 | 37.0°F — Jun 1, 2020 | 2.07 in — Jun 2, 2015 |
| July | 99.0°F — Jul 2, 2018 | 46.0°F — Jul 22, 2025 | 2.57 in — Jul 3, 2023 |
| August | 99.0°F — Aug 5, 2022 | 43.0°F — Aug 28, 2025 | 1.98 in — Aug 12, 2018 |
| September | 93.9°F — Sep 3, 2015 | 28.9°F — Sep 20, 2020 | 5.25 in — Sep 12, 2023 |
| October | 87.1°F — Oct 5, 2023 | 10.9°F — Oct 31, 2020 | 3.02 in — Oct 23, 2014 |
| November | 80.1°F — Nov 1, 2024 | 6.1°F — Nov 22, 2018 | 2.20 in — Nov 3, 2018 |
| December | 69.1°F — Dec 25, 2015 | -11.0°F — Dec 31, 2017 | 2.40 in — Dec 19, 2023 |
Click a month to see every daily record for that month in Nashua.