All-time weather records — Merrill, WI
Climate change signal in Merrill
of Merrill's all-time daily heat records were set in the last decade (31 of 366 records since 2015).
of all-time daily cold records were set in the last decade (5 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 | # |
|---|---|---|---|---|
| 1900s | 22 | 24 | ||
| 1910s | 52 | 33 | ||
| 1920s | 40 | 49 | ||
| 1930s | 78 | 25 | ||
| 1940s | 24 | 23 | ||
| 1950s | 26 | 33 | ||
| 1960s | 11 | 19 | ||
| 1970s | 12 | 73 | ||
| 1980s | 17 | 44 | ||
| 1990s | 17 | 24 | ||
| 2000s | 19 | 10 | ||
| 2010s | 22 | 7 | ||
| 2020s | 26 | 2 |
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 1905, the latest in 2026. Period of observation: 1905-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 57.0°F — Jan 23, 1942 | -47.9°F — Jan 12, 1909 | 1.66 in — Jan 5, 1939 |
| February | 64.9°F — Feb 28, 2024 | -42.0°F — Feb 5, 1907 | 2.05 in — Feb 12, 1965 |
| March | 86.0°F — Mar 27, 1910 | -35.0°F — Mar 1, 1962 | 2.18 in — Mar 16, 2016 |
| April | 91.9°F — Apr 28, 1952 | -5.1°F — Apr 1, 1924 | 2.21 in — Apr 30, 1984 |
| May | 104.0°F — May 30, 1934 | 15.1°F — May 6, 1950 | 2.45 in — May 6, 1936 |
| June | 104.0°F — Jun 23, 1934 | 28.0°F — Jun 4, 1945 | 4.35 in — Jun 24, 1946 |
| July | 109.9°F — Jul 13, 1936 | 33.1°F — Jul 4, 1972 | 5.90 in — Jul 23, 1912 |
| August | 100.9°F — Aug 15, 1936 | 30.0°F — Aug 30, 1915 | 3.74 in — Aug 24, 1962 |
| September | 97.0°F — Sep 8, 1933 | 18.0°F — Sep 22, 1974 | 4.64 in — Sep 5, 2018 |
| October | 89.1°F — Oct 4, 1905 | 3.9°F — Oct 30, 1925 | 3.00 in — Oct 6, 1911 |
| November | 75.0°F — Nov 1, 1909 | -15.0°F — Nov 28, 1976 | 10.76 in — Nov 16, 1957 |
| December | 62.1°F — Dec 1, 1909 | -31.0°F — Dec 19, 1983 | 2.00 in — Dec 4, 1990 |
Click a month to see every daily record for that month in Merrill.