FrostList

Sprinkler Winterization in Arizona

In Arizona, local sprinklers deadlines run from Sep 29 to Dec 25, with a median around Dec 12 — 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 — Arizona deadlines city by city
Photo: Pexels

Notable cities

All Arizona cities

CityLocal deadlineMedian first 28°F
FlagstaffSep 29Oct 9View →Checklist
PrescottOct 21Oct 31View →Checklist
Prescott ValleyOct 29Nov 8View →Checklist
Sierra VistaNov 11Nov 21View →Checklist
Oro ValleyNov 11Nov 21View →Checklist
MaricopaNov 26Dec 6View →Checklist
MesaDec 9Dec 19View →Checklist
ScottsdaleDec 9Dec 19View →Checklist
TempeDec 9Dec 19View →Checklist
MaranaDec 9Dec 19View →Checklist
Casa GrandeDec 12Dec 22View →Checklist
Apache JunctionDec 12Dec 22View →Checklist
Bullhead CityDec 15Dec 25View →Checklist
GlendaleDec 19Dec 29View →Checklist
PeoriaDec 19Dec 29View →Checklist
SurpriseDec 19Dec 29View →Checklist
TucsonDec 20Dec 30View →Checklist
YumaDec 21Dec 31View →Checklist
AvondaleDec 25Jan 4View →Checklist
GoodyearDec 25Jan 4View →Checklist
BuckeyeDec 25Jan 4View →Checklist
OctNovDecJanFlagstaffSep 29PrescottOct 21Prescott ValleyOct 29Sierra VistaNov 11Oro ValleyNov 11MaricopaNov 26MesaDec 9ScottsdaleDec 9TempeDec 9MaranaDec 9Casa GrandeDec 12Apache JunctionDec 12Bullhead CityDec 15GlendaleDec 19PeoriaDec 19SurpriseDec 19TucsonDec 20YumaDec 21

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

Sprinkler Winterization in Arizona: related searches

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

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

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