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First and last freeze dates in Ukiah, CA

The first freeze of fall (a low of 32°F or colder) typically comes around Nov 15, and the last freeze of spring around Mar 8.

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.

Nov 15Median first fall freeze (≤32°F)

Mar 8Median last spring freeze (≤32°F)

248Median freeze-free days between

First and last freeze dates in Ukiah

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Nov 15	Oct 30 – Nov 25	Oct 10 (2019) / Dec 26 (2014)	100%
32°F or colder (freeze)	Last in spring	Mar 8	Feb 9 – Apr 8	–	100%
28°F or colder (hard freeze)	First in fall	Dec 3	Nov 19 – Dec 19	Nov 9 (2020) / Dec 31 (2014)	83%
28°F or colder (hard freeze)	Last in spring	Feb 8	Jan 2 – Mar 7	–	92%

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 248 days.

Nearby weather stations

Source station: Ukiah Muni Ap (USW00023275), elevation 603 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).