Drought in Henry County, IL: 2.3 years in 10 since 2000

2.3 years in 10

Henry County, IL: 6 of 26 full years had 13+ weeks in drought. About as drought-prone as a typical US county.

20002025

Drought years: 2000 (21 wk), 2003 (34 wk), 2005 (30 wk), 2006 (15 wk), 2012 (26 wk) and 2013 (28 wk). Not a single drought week in 2001, 2004, 2007, 2008, 2009, 2010, 2011, 2015, 2016, 2017, 2018 and 2021.

Keep a lawn, but switch to drought-tolerant grass

Dry years come often enough to kill a thirsty lawn every few summers. Keep the lawn, reseed with a drought-tolerant mix, and put the beds on drip.

If you reseed, use a drought-tolerant mix and do it well clear of Dec, the month drought is most common here. Put beds on drip before the next dry year.

Against the rest of IL

43rd most drought-prone of 102 IL counties; the IL middle is 2.3 in 10. Closest on the list: De Witt County (2.3 in 10) and DeKalb County (2.3 in 10). Driest in IL: Hancock County (3.8 in 10). Least drought: Edwards County (0.4 in 10).

When in the year it hits

Most often in Dec (24% of weeks), then Oct (22%) and Nov (21%). Least in May (3%). May to September averages 10%.

18 Jan
21 Feb
15 Mar
10 Apr
3 May
7 Jun
9 Jul
11 Aug
19 Sep
22 Oct
21 Nov
24 Dec

The worst year: 2003

2003: 34 weeks in drought, peaking at D2 severe. Across 1,401 weekly maps: 15% of all weeks at D1 or worse, 6.1% at D2, 2.4% at D3, never any D4. Longest unbroken spell: 45 weeks, Jun 7, 2005 to Apr 11, 2006.

Lately

Last drought year: 2013, 28 weeks. 2016-2025: 0 in 10, against 3.8 in 10 for 2000-2015, wetter lately. So far in 2026: 7 of 44 weeks in drought, through Nov 3, 2026.