All-time weather records — Lake Mills, IA
Record high
100.9°F
July 8, 1974
Record low
°F
January 1,
Wettest day
5.50 in
August 18, 2025
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | — | — | 1.00 in — Jan 7, 1966 |
| February | — | — | 1.50 in — Feb 24, 2019 |
| March | — | — | 2.25 in — Mar 7, 2026 |
| April | — | — | 2.84 in — Apr 7, 2001 |
| May | — | — | 4.04 in — May 21, 1959 |
| June | — | — | 5.14 in — Jun 1, 1955 |
| July | 100.9°F — Jul 8, 1974 | — | 4.75 in — Jul 14, 2013 |
| August | — | — | 5.50 in — Aug 18, 2025 |
| September | — | — | 4.47 in — Sep 15, 2004 |
| October | — | — | 2.70 in — Oct 26, 2016 |
| November | — | — | 2.41 in — Nov 30, 1991 |
| December | 51.1°F — Dec 2, 1973 | — | 1.59 in — Dec 28, 1982 |
Click a month to see every daily record for that month in Lake Mills.