All-time weather records — Lester, IA
Climate change signal in Lester
of Lester's all-time daily heat records were set in the last decade (34 of 366 records since 2015).
of all-time daily cold records were set in the last decade (13 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 | 16 | 83 | ||
| 1900s | 7 | 14 | ||
| 1910s | 26 | 49 | ||
| 1920s | 15 | 44 | ||
| 1930s | 69 | 25 | ||
| 1940s | 23 | 15 | ||
| 1950s | 22 | 23 | ||
| 1960s | 20 | 22 | ||
| 1970s | 18 | 29 | ||
| 1980s | 47 | 19 | ||
| 1990s | 18 | 18 | ||
| 2000s | 33 | 5 | ||
| 2010s | 26 | 13 | ||
| 2020s | 26 | 7 |
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 1894, the latest in 2026. Period of observation: 1893-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 68.0°F — Jan 27, 2002 | -40.0°F — Jan 12, 1912 | 1.09 in — Jan 11, 1975 |
| February | 70.0°F — Feb 24, 2002 | -40.0°F — Feb 9, 1899 | 1.74 in — Feb 28, 1951 |
| March | 90.0°F — Mar 22, 2026 | -23.1°F — Mar 11, 1948 | 2.03 in — Mar 31, 2006 |
| April | 95.0°F — Apr 27, 1987 | 3.0°F — Apr 3, 1936 | 3.60 in — Apr 23, 2001 |
| May | 106.0°F — May 30, 1934 | 19.9°F — May 3, 1967 | 3.49 in — May 22, 1936 |
| June | 107.1°F — Jun 22, 1988 | 32.0°F — Jun 5, 2000 | 6.41 in — Jun 22, 2024 |
| July | 111.0°F — Jul 4, 1936 | 32.0°F — Jul 9, 1895 | 5.15 in — Jul 22, 2010 |
| August | 109.0°F — Aug 24, 1936 | 34.0°F — Aug 14, 1895 | 4.15 in — Aug 16, 1977 |
| September | 104.0°F — Sep 7, 1976 | 18.0°F — Sep 27, 1893 | 6.41 in — Sep 1, 1933 |
| October | 93.9°F — Oct 5, 1963 | -9.9°F — Oct 29, 1925 | 2.73 in — Oct 16, 1968 |
| November | 80.1°F — Nov 9, 1999 | -20.0°F — Nov 14, 1959 | 2.55 in — Nov 20, 1975 |
| December | 70.0°F — Dec 4, 1998 | -29.9°F — Dec 29, 1917 | 1.57 in — Dec 30, 1931 |
Click a month to see every daily record for that month in Lester.