All-time weather records — Groton, SD
Record high
°F
January 1,
Record low
°F
January 1,
Wettest day
8.74 in
May 6, 2007
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | — | — | 0.71 in — Jan 29, 2013 |
| February | — | — | 0.93 in — Mar 1, 2012 |
| March | — | — | 1.13 in — Mar 21, 2008 |
| April | — | — | 3.87 in — Apr 16, 2003 |
| May | — | — | 8.74 in — May 6, 2007 |
| June | — | — | 3.28 in — Jun 24, 2009 |
| July | — | — | 1.87 in — Jul 6, 2004 |
| August | — | — | 2.69 in — Aug 19, 2015 |
| September | — | — | 2.08 in — Sep 24, 2017 |
| October | — | — | 2.00 in — Oct 15, 2013 |
| November | — | — | 0.96 in — Nov 17, 2018 |
| December | — | — | 1.28 in — Dec 30, 2005 |
Click a month to see every daily record for that month in Groton.