All-time weather records — Rock Valley, IA
Record high
°F
January 1,
Record low
°F
January 1,
Wettest day
5.75 in
June 17, 1990
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | — | — | 1.02 in — Jan 30, 2001 |
| February | — | — | 1.15 in — Mar 1, 2012 |
| March | — | — | 2.30 in — Mar 24, 2018 |
| April | — | — | 2.05 in — Apr 6, 1999 |
| May | — | — | 3.35 in — May 26, 2013 |
| June | — | — | 5.75 in — Jun 17, 1990 |
| July | — | — | 3.62 in — Jul 22, 2010 |
| August | — | — | 5.54 in — Aug 6, 2023 |
| September | — | — | 5.60 in — Sep 19, 2018 |
| October | — | — | 3.59 in — Oct 30, 1979 |
| November | — | — | 2.03 in — Nov 10, 1998 |
| December | — | — | 1.50 in — Dec 27, 1982 |
Click a month to see every daily record for that month in Rock Valley.