Drought in Larimer County, CO: 5.4 years in 10 since 2000

5.4 years in 10

Larimer County, CO: 14 of 26 full years had 13+ weeks in drought. More drought-prone than most US counties.

20002025

Drought years: 2002 (48 wk), 2003 (26 wk), 2004 (23 wk), 2006 (28 wk), 2010 (14 wk), 2011 (19 wk), 2012 (37 wk), 2013 (23 wk), 2017 (17 wk), 2020 (20 wk), 2021 (22 wk), 2022 (17 wk), 2024 (22 wk) and 2025 (14 wk). Not a single drought week in 2001, 2005, 2007, 2008, 2014, 2015, 2018, 2019 and 2023.

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 Dec peak, and check your water utility for a turf-removal rebate before you dig.

Against the rest of CO

38th most drought-prone of 64 CO counties; the CO middle is 5.4 in 10. Closest on the list: Broomfield County (5.4 in 10) and Garfield County (5 in 10). Driest in CO: Otero County (6.5 in 10). Least drought: Grand County (3.5 in 10).

When in the year it hits

Most often in Dec (37% of weeks), then Mar (35%) and Feb (33%). Least in May (18%). May to September averages 22%.

28 Jan
33 Feb
35 Mar
30 Apr
18 May
20 Jun
26 Jul
24 Aug
22 Sep
28 Oct
33 Nov
37 Dec

The worst year: 2002

2002: 48 weeks in drought, peaking at D4 exceptional. Across 1,401 weekly maps: 27.8% of all weeks at D1 or worse, 13.6% at D2, 2.3% at D3, 15 weeks with some of the county in D4. Longest unbroken spell: 67 weeks, Feb 5, 2002 to May 13, 2003.

Lately

Last drought year: 2025, 14 weeks. 2016-2025: 6 in 10, against 5 in 10 for 2000-2015, about the same. So far in 2026: 44 of 44 weeks in drought, through Nov 3, 2026.