When is the last frost in Delano, CA?

For ZIP code 93215, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Delano, CA weather station. There is a 1-in-10 chance of a frost after March 5.

When is the first frost in Delano, CA?

The average first fall frost (32°F) is December 8. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.

How long is the growing season in 93215?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 309 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.

Frost dates for 93215Delano, CA

The average last spring frost in Delano is January 31 and the average first fall frost is December 8, giving a typical growing season of about 309 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 31
Average first fall frost: Dec 8
Growing season: 309 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.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Feb 6 · Mar 5 · Apr 4	Nov 10 · Nov 24 · Dec 8	261 days	100%
Frost / freeze (32°F)	Dec 30 · Jan 31 · Mar 5	Nov 23 · Dec 8 · Dec 30	309 days	98%
Hard freeze (28°F)	Dec 13 · Dec 31 · Jan 30	Dec 3 · Dec 19 · Jan 9	354 days	67%

Where these dates come from

ZIP code 93215 is matched to the NOAA station Delano, CA, 1.3 km away, at 302 ft elevation (13 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Delano, CA (used)	302 ft	Jan 31	Dec 8
Wasco, CA	291 ft	Jan 31	Dec 5
Shafter 6E, CA	404 ft	Feb 20	Nov 23
Porterville, CA	393 ft	Jan 20	Dec 13

Frost dates near Delano

Delano, CA 93216 · last Jan 31, first Dec 8
Mc Farland, CA 93250 · last Jan 31, first Dec 5
Richgrove, CA 93261 · last Jan 31, first Dec 8
Earlimart, CA 93219 · last Jan 31, first Dec 8
Pixley, CA 93256 · last Feb 15, first Nov 27
Ducor, CA 93218 · last Feb 20, first Nov 30
Wasco, CA 93280 · last Jan 31, first Dec 5
Alpaugh, CA 93201 · last Feb 15, first Nov 27

Frequently asked questions

When is the last frost in Delano, CA?: For ZIP code 93215, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Delano, CA weather station. There is a 1-in-10 chance of a frost after March 5.
When is the first frost in Delano, CA?: The average first fall frost (32°F) is December 8. There is a 1-in-10 chance of frost by November 23, so tender plants are at risk from that point on.
How long is the growing season in 93215?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 309 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.