All-time weather records — Grafton, IA
Record high
°F
January 1,
Record low
°F
January 1,
Wettest day
7.58 in
August 28, 2021
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | — | — | 0.93 in — Jan 25, 2017 |
| February | — | — | 1.36 in — Feb 24, 2019 |
| March | — | — | 2.01 in — Mar 23, 2011 |
| April | — | — | 4.50 in — Apr 13, 2022 |
| May | — | — | 5.10 in — May 20, 2013 |
| June | — | — | 5.64 in — Jun 8, 2008 |
| July | — | — | 4.95 in — Jul 16, 2011 |
| August | — | — | 7.58 in — Aug 28, 2021 |
| September | — | — | 4.07 in — Sep 13, 2019 |
| October | — | — | 2.75 in — Oct 26, 2016 |
| November | — | — | 2.42 in — Nov 13, 2010 |
| December | — | — | 1.17 in — Dec 2, 2007 |
Click a month to see every daily record for that month in Grafton.