FrostDateByZip

Frost dates for 95571Weott, CA

The average last spring frost in Weott is February 1 and the average first fall frost is December 19, giving a typical growing season of about 328 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost
Feb 1

Safer after Mar 8 (1-in-10 risk)

Average first fall frost
Dec 19

Possible by Nov 19 (1-in-10 risk)

Growing season
328 days

First frost typically in 53 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
TemperatureLast spring: 90% / 50% / 10% chanceFirst fall: 10% / 50% / 90% chanceGrowing season (50%)Years with at least one
Light frost (36°F)Feb 1 · Mar 14 · Apr 9Nov 1 · Nov 23 · Dec 23255 days100%
Frost / freeze (32°F)Dec 17 · Feb 1 · Mar 8Nov 19 · Dec 19 · Feb 10328 days84%
Hard freeze (28°F)Dec 15 · Jan 3 · Jan 31Dec 7 · Dec 31 · Jan 28365 days20%

Where these dates come from

ZIP code 95571 is matched to the NOAA station Scotia, CA, 23.7 km away, at 136 ft elevation (169 ft lower than the ZIP code's center). Nearby stations for comparison:

StationElevationAvg last frostAvg first frost
Scotia, CA (used)136 ftFeb 1Dec 19
Grizzly Creek Sp, CA413 ftMar 4Nov 22
Shelter Cove Aviation, CA246 ft——
Richardson Gr Sp, CA503 ftMar 10Dec 1

Frost dates near Weott

Frequently asked questions

When is the last frost in Weott, CA?
For ZIP code 95571, the average last spring frost (32°F) is February 1, based on NOAA 1991-2020 climate normals for the Scotia, CA weather station. There is a 1-in-10 chance of a frost after March 8.
When is the first frost in Weott, CA?
The average first fall frost (32°F) is December 19. There is a 1-in-10 chance of frost by November 19, so tender plants are at risk from that point on.
How long is the growing season in 95571?
In half of years, the frost-free season (between the last and first 32°F frost) is at least 328 days long.
Are these frost dates a forecast?
No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.