All-time weather records — Deerfield, WI
Climate change signal in Deerfield
of Deerfield's all-time daily heat records were set in the last decade (53 of 366 records since 2015).
of all-time daily cold records were set in the last decade (4 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 | # |
|---|---|---|---|---|
| 1890s | 26 | 42 | ||
| 1900s | 19 | 41 | ||
| 1910s | 29 | 36 | ||
| 1920s | 19 | 60 | ||
| 1930s | 57 | 29 | ||
| 1940s | 16 | 31 | ||
| 1950s | 20 | 16 | ||
| 1960s | 10 | 18 | ||
| 1970s | 12 | 44 | ||
| 1980s | 36 | 24 | ||
| 1990s | 20 | 6 | ||
| 2000s | 23 | 13 | ||
| 2010s | 49 | 6 | ||
| 2020s | 30 | · |
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 1893, the latest in 2026. Period of observation: 1893-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 60.1°F — Jan 26, 1944 | -33.0°F — Jan 30, 1951 | 11.44 in — Jan 26, 1996 |
| February | 71.1°F — Feb 23, 2017 | -32.1°F — Feb 20, 1929 | 1.66 in — Feb 22, 1981 |
| March | 84.0°F — Mar 22, 2012 | -18.0°F — Mar 1, 1962 | 2.48 in — Mar 15, 1959 |
| April | 89.1°F — Apr 10, 1930 | 8.1°F — Apr 7, 1982 | 3.10 in — Apr 23, 1999 |
| May | 102.9°F — May 31, 1934 | 19.9°F — May 2, 1945 | 3.20 in — May 17, 1999 |
| June | 104.0°F — Jun 1, 1934 | 5.0°F — Jun 24, 2004 | 4.00 in — Jun 16, 1996 |
| July | 109.9°F — Jul 14, 1936 | 39.9°F — Jul 31, 1918 | 4.42 in — Jul 17, 1903 |
| August | 104.0°F — Aug 1, 1988 | 25.0°F — Aug 7, 1903 | 5.59 in — Aug 19, 2007 |
| September | 100.0°F — Sep 7, 1939 | 24.1°F — Sep 30, 1899 | 5.11 in — Sep 8, 1941 |
| October | 90.0°F — Oct 1, 1897 | -2.9°F — Oct 30, 1925 | 3.13 in — Oct 17, 1905 |
| November | 77.0°F — Nov 1, 1933 | -13.0°F — Nov 29, 1976 | 3.00 in — Nov 5, 2003 |
| December | 66.0°F — Dec 4, 1998 | -24.0°F — Dec 24, 1983 | 3.33 in — Dec 8, 1995 |
Click a month to see every daily record for that month in Deerfield.