DroughtOdds

Drought in Sublette County, WY: 6.9 years in 10 since 2000

6.9 years in 10

Sublette County, WY: 18 of 26 full years had 13+ weeks in drought. More drought-prone than most US counties.

  1. 15
  2. 41
  3. 53
  4. 52
  5. 52
  6. 52
  7. 20
  8. 52
  9. 38
  10. 0
  11. 45
  12. 0
  13. 25
  14. 42
  15. 0
  16. 0
  17. 0
  18. 0
  19. 0
  20. 0
  21. 14
  22. 52
  23. 52
  24. 26
  25. 26
  26. 38

20002025

Drought years: 2000 (15 wk), 2001 (41 wk), 2002 (53 wk), 2003 (52 wk), 2004 (52 wk), 2005 (52 wk), 2006 (20 wk), 2007 (52 wk), 2008 (38 wk), 2010 (45 wk), 2012 (25 wk), 2013 (42 wk), 2020 (14 wk), 2021 (52 wk), 2022 (52 wk), 2023 (26 wk), 2024 (26 wk) and 2025 (38 wk). Not a single drought week in 2009, 2011, 2014, 2015, 2016, 2017, 2018 and 2019.

Plan for drought as normal: shrink the lawn, go drip and natives

Drought is the normal state of things here. Most of the yard goes to natives and gravel on drip; any grass that stays is a small, tough patch.

If you are replacing turf, plant natives in fall so roots set before the Sep peak, and check your water utility for a turf-removal rebate before you dig.

Against the rest of WY

3rd most drought-prone of 23 WY counties; the WY middle is 5.8 in 10. Closest on the list: Uinta County (7.3 in 10) and Lincoln County (6.9 in 10). Driest in WY: Sweetwater County (7.3 in 10). Least drought: Laramie County (5 in 10).

When in the year it hits

Most often in Sep (60% of weeks), then Jul (59%) and Aug (59%). Least in Feb (42%). May to September averages 54%.

  1. 44 Jan
  2. 42 Feb
  3. 46 Mar
  4. 48 Apr
  5. 47 May
  6. 47 Jun
  7. 59 Jul
  8. 59 Aug
  9. 60 Sep
  10. 57 Oct
  11. 55 Nov
  12. 52 Dec

The worst year: 2002

2002: 53 weeks in drought, peaking at D4 exceptional. Across 1,401 weekly maps: 51.4% of all weeks at D1 or worse, 32.5% at D2, 8.5% at D3, 49 weeks with some of the county in D4. Longest unbroken spell: 254 weeks, Mar 20, 2001 to Jan 24, 2006.

Lately

Last drought year: 2025, 38 weeks. 2016-2025: 6 in 10, against 7.5 in 10 for 2000-2015, about the same. So far in 2026: 25 of 44 weeks in drought, through Nov 3, 2026.

Further reading

Sublette County lands on the plan covered in shrinking the lawn. Its worst year, 2002, was not one of the big national drought years; see the worst years since 2000. How each of Sublette County's 1,401 weeks was judged: how drought is counted.