All-time weather records — Darien, WI
Climate change signal in Darien
of Darien's all-time daily heat records were set in the last decade (270 of 366 records since 2015).
of all-time daily cold records were set in the last decade (233 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 | 245 | ||
| 2020s | 178 | 121 |
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 | 57.9°F — Jan 30, 2013 | -17.0°F — Jan 24, 2026 | 1.17 in — Jan 23, 2018 |
| February | 73.9°F — Feb 28, 2024 | -14.1°F — Feb 1, 2023 | 1.15 in — Feb 27, 2023 |
| March | 82.0°F — Mar 22, 2012 | -4.0°F — Mar 5, 2015 | 1.63 in — Mar 17, 2026 |
| April | 84.0°F — Apr 29, 2025 | 17.1°F — Apr 2, 2023 | 2.58 in — Apr 18, 2013 |
| May | 96.1°F — May 28, 2018 | 28.9°F — May 9, 2020 | 1.82 in — May 8, 2024 |
| June | 99.0°F — Jun 15, 2022 | 37.9°F — Jun 2, 2015 | 4.25 in — Jun 19, 2025 |
| July | 102.9°F — Jul 6, 2012 | 46.0°F — Jul 2, 2015 | 3.10 in — Jul 12, 2017 |
| August | 99.0°F — Aug 24, 2023 | 44.1°F — Aug 25, 2017 | 2.48 in — Aug 11, 2020 |
| September | 95.0°F — Sep 4, 2023 | 32.0°F — Sep 30, 2018 | 3.55 in — Sep 12, 2022 |
| October | 88.0°F — Oct 4, 2025 | 26.1°F — Oct 23, 2013 | 2.61 in — Oct 2, 2019 |
| November | 73.9°F — Nov 3, 2015 | 7.0°F — Nov 21, 2014 | 2.06 in — Nov 27, 2015 |
| December | 66.0°F — Dec 4, 2012 | -8.0°F — Dec 23, 2022 | 1.50 in — Dec 14, 2015 |
Click a month to see every daily record for that month in Darien.