FrostList

Sprinkler Winterization in Wyoming

In Wyoming, local sprinklers deadlines run from Sep 26 to Sep 30, with a median around Sep 30 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.

Lawn sprinkler spraying water in low sunlight — blow out irrigation lines before the first hard freeze — Wyoming deadlines city by city
Photo: Pexels

Notable cities

All Wyoming cities

CityLocal deadlineMedian first 28°F
CasperSep 26Oct 6View →Checklist
CheyenneSep 30Oct 10View →Checklist
OctCasperSep 26CheyenneSep 30

Local sprinkler winterization deadlines for Wyoming cities — built from each city’s own NOAA station, not one statewide date.

Sprinkler Winterization in Wyoming: related searches

Wyoming homeowners search for: sprinkler blowout cost, irrigation winterization, and "sprinkler winterization near me" — every city page below answers those with local NOAA dates.

sprinkler blowout costirrigation winterizationsprinkler blowout near meblow out sprinklers with air compressorCFM for sprinkler blowoutbackflow preventer freeze protectiondrain sprinkler system for wintermanual drain vs blowout

Back to the national Sprinkler Winterization guide, or see the methodology. You can also compare how the sprinkler winterization window shifts in Wisconsin and Alabama.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 25, 2026.