All-time weather records — Winona, MO
Climate change signal in Winona
of Winona's all-time daily heat records were set in the last decade (240 of 366 records since 2015).
of all-time daily cold records were set in the last decade (275 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 | 214 | 186 | ||
| 2020s | 152 | 180 |
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 2011, the latest in 2026. Period of observation: 2011-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 73.9°F — Jan 7, 2026 | -14.1°F — Jan 26, 2026 | 2.35 in — Jan 13, 2013 |
| February | 87.1°F — Feb 28, 2024 | -9.0°F — Feb 16, 2021 | 2.09 in — Feb 21, 2018 |
| March | 93.9°F — Mar 23, 2026 | 3.0°F — Mar 5, 2019 | 2.88 in — Mar 3, 2023 |
| April | 89.1°F — Apr 3, 2012 | 18.0°F — Apr 2, 2021 | 6.57 in — Apr 30, 2017 |
| May | 93.0°F — May 13, 2022 | 28.0°F — May 3, 2023 | 3.24 in — May 25, 2016 |
| June | 106.0°F — Jun 29, 2012 | 42.1°F — Jun 14, 2019 | 4.06 in — Jun 29, 2025 |
| July | 106.0°F — Jul 31, 2012 | 48.0°F — Jul 3, 2013 | 1.69 in — Jul 13, 2023 |
| August | 104.0°F — Aug 4, 2011 | 45.0°F — Aug 27, 2025 | 3.70 in — Aug 15, 2016 |
| September | 99.0°F — Sep 14, 2025 | 34.0°F — Sep 29, 2022 | 2.69 in — Sep 25, 2011 |
| October | 91.9°F — Oct 1, 2023 | 15.1°F — Oct 30, 2017 | 3.76 in — Oct 10, 2014 |
| November | 82.9°F — Nov 2, 2016 | 7.0°F — Nov 13, 2019 | 4.08 in — Nov 4, 2024 |
| December | 78.1°F — Dec 27, 2025 | -8.0°F — Dec 23, 2022 | 3.76 in — Dec 18, 2021 |
Click a month to see every daily record for that month in Winona.