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First and last freeze dates in Thermal (Desert Resorts Airport), CA

The first freeze of fall (a low of 32°F or colder) typically comes around Dec 3, and the last freeze of spring around Feb 14.

This fall so far (data through Oct 16, 2026): no 32°F freeze recorded yet at this station. Observed data, can lag a day or two.

Dec 3Median first fall freeze (≤32°F)

Feb 14Median last spring freeze (≤32°F)

288Median freeze-free days between

First and last freeze dates in Thermal (Desert Resorts Airport)

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Dec 3	Nov 20 – Dec 19	Oct 31 (2019) / Dec 27 (2014)	100%
32°F or colder (freeze)	Last in spring	Feb 14	Jan 13 – Mar 7	–	93%
28°F or colder (hard freeze)	First in fall	Dec 13	Nov 26 – Dec 26	Nov 14 (2000) / Dec 27 (2014)	77%
28°F or colder (hard freeze)	Last in spring	Feb 3	Jan 5 – Feb 27	–	73%

Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.

The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 288 days.

Nearby weather stations

Source station: Desert Resorts Rgnl Ap (USW00003104), elevation -118 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.

Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in California (on our sister site PlugVsPump, from EIA prices).