All-time weather records — Hamersville, OH
Climate change signal in Hamersville
of Hamersville'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 | 200 | 99 | ||
| 2020s | 166 | 267 |
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 2015, the latest in 2026. Period of observation: 2015-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 75.9°F — Jan 12, 2020 | -5.1°F — Jan 22, 2025 | 2.35 in — Jan 3, 2023 |
| February | 81.0°F — Feb 21, 2018 | -5.1°F — Feb 1, 2026 | 2.50 in — Feb 16, 2025 |
| March | 87.1°F — Mar 23, 2026 | 14.0°F — Mar 2, 2025 | 1.70 in — Mar 10, 2019 |
| April | 86.0°F — Apr 6, 2023 | 23.0°F — Apr 3, 2021 | 2.42 in — Apr 4, 2025 |
| May | 91.9°F — May 15, 2018 | 25.0°F — May 9, 2020 | 2.70 in — May 19, 2020 |
| June | 96.1°F — Jun 25, 2025 | 41.0°F — Jun 7, 2017 | 2.80 in — Jun 24, 2017 |
| July | 96.1°F — Jul 5, 2018 | 50.0°F — Jul 4, 2022 | 5.30 in — Jul 23, 2017 |
| August | 96.1°F — Aug 28, 2016 | 46.9°F — Aug 31, 2025 | 1.94 in — Aug 8, 2018 |
| September | 97.0°F — Sep 14, 2019 | 39.0°F — Sep 9, 2017 | 3.16 in — Sep 9, 2018 |
| October | 96.1°F — Oct 3, 2019 | 28.0°F — Oct 21, 2022 | 2.10 in — Oct 28, 2015 |
| November | 84.0°F — Nov 2, 2016 | 14.0°F — Nov 29, 2023 | 1.97 in — Nov 6, 2018 |
| December | 73.9°F — Dec 27, 2016 | -6.0°F — Dec 24, 2022 | 1.84 in — Dec 18, 2016 |
Click a month to see every daily record for that month in Hamersville.