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Frost dates for Ukiah, California

In a typical year, Ukiah’s last spring frost lands around Mar 19 and the first fall frost around Nov 20, a growing season of about 246 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9a.

Right now the growing season is open, with about 26 days until the typical first fall frost.

Last spring frost and first fall frost odds for Ukiah, California
OddsLast spring frostFirst fall frost
10 percentFeb 13Nov 2
50 percentMar 19Nov 20
90 percentApr 15Dec 9

A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.

Soil in Ukiah is typically around 59°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Ukiah

Timing comes from the same temperature engine the app uses, run against Ukiah’s normals for today.

See the full what-to-plant lookup

Common questions

When is the last frost in Ukiah, California?

Ukiah’s last spring frost falls around March 19 in a typical year. One year in ten it is done by February 13, and one year in ten frost holds on until April 15. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Ukiah?

The first fall frost arrives around November 20 in a typical year, as early as November 2 in an early year and as late as December 9 in a late one.

How long is the growing season in Ukiah?

About 246 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Ukiah in?

Ukiah is in USDA hardiness zone 9a under the 2023 USDA Plant Hardiness Zone Map.

Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.

Nearby cities

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