Frost dates · Arizona
When is the first frost in Tucson?
Tucson right now
61°FScattered clouds
- Today65°F / 57°FClouds
- Tomorrow72°F / 51°FClear skies
- Monday75°F / 52°FClear skies
The sun's clocked off early.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical year, Tucson’s first frost comes around December 9 and its last around February 5.
One year in ten the first frost comes as early as November 21, and nine years in ten it has arrived by January 3. One year in ten the last frost is over as early as January 4, and nine years in ten it is over by March 2. Tucson averages about 12 nights a year at 32°F or colder, with about 307 frost-free days in between in a typical year. The first frost here usually comes in about 25 days. That makes it the 2nd latest first frost of the 117 cities we track where it freezes most years.
Last updated
No freeze in the forecast for the next 48 hours.
Tucson freezes on about a dozen nights a year, and the saguaros handle it far better than the residents.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | November 21 | December 9 | January 3 |
| Last frost | January 4 | February 5 | March 2 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Houston, Texas: first frost around December 9
- Pensacola, Florida: first frost around December 9
- Jacksonville, Florida: first frost around December 7
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00023160.