FrostList

Frozen Pipe Protection in Colorado

In Colorado, local frozen pipes deadlines run from Sep 15 to Oct 11, with a median around Sep 25 — 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.

Notable cities

All Colorado cities

CityLocal deadlineMedian first 28°F
LovelandSep 15Oct 10View →Checklist
Castle RockSep 17Oct 12View →Checklist
ArvadaSep 20Oct 14View →Checklist
BoulderSep 21Oct 15View →Checklist
ParkerSep 21Oct 12View →Checklist
LongmontSep 23Oct 12View →Checklist
Fort CollinsSep 24Oct 17View →Checklist
LakewoodSep 24Oct 16View →Checklist
AuroraSep 25Oct 18View →Checklist
CentennialSep 25Oct 17View →Checklist
Commerce CitySep 25Oct 18View →Checklist
Colorado SpringsSep 26Oct 16View →Checklist
ThorntonSep 26Oct 21View →Checklist
WestminsterSep 26Oct 21View →Checklist
GreeleySep 26Oct 18View →Checklist
BroomfieldSep 26Oct 21View →Checklist
NorthglennSep 26Oct 21View →Checklist
LittletonSep 27Oct 21View →Checklist
DenverSep 28Oct 21View →Checklist
PuebloSep 28Oct 18View →Checklist
Grand JunctionOct 11Nov 2View →Checklist

Back to the national Frozen Pipe Protection guide, or see the methodology.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.