When is the last frost in Mecca, CA?

For ZIP code 92254, the average last spring frost (32°F) is January 6, based on NOAA 1991-2020 climate normals for the Mecca Fire Stn, CA weather station. There is a 1-in-10 chance of a frost after February 4.

When is the first frost in Mecca, CA?

The average first fall frost (32°F) is December 22. There is a 1-in-10 chance of frost by December 4, so tender plants are at risk from that point on.

How long is the growing season in 92254?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 352 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 92254Mecca, CA

The average last spring frost in Mecca is January 6 and the average first fall frost is December 22, giving a typical growing season of about 352 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 6
Average first fall frost: Dec 22
Growing season: 352 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)	Dec 30 · Jan 28 · Feb 17	Nov 25 · Dec 10 · Dec 28	318 days	97%
Frost / freeze (32°F)	Dec 13 · Jan 6 · Feb 4	Dec 4 · Dec 22 · Jan 14	352 days	70%
Hard freeze (28°F)	Dec 18 · Jan 7 · Feb 2	Dec 10 · Jan 1 · Jan 29	365 days	21%

Where these dates come from

ZIP code 92254 is matched to the NOAA station Mecca Fire Stn, CA, 5.7 km away, at -183 ft elevation (16 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Mecca Fire Stn, CA (used)	-183 ft	Jan 6	Dec 22
Desert Resorts Rgnl Ap, CA	-118 ft	Feb 7	Dec 2
Indio Fire Stn, CA	-21 ft	Dec 31	Dec 27
Chiriaco Summit, CA	1,706 ft	Feb 5	Dec 17

Frost dates near Mecca

Thermal, CA 92274 · last Feb 7, first Dec 2
Coachella, CA 92236 · last Feb 7, first Dec 2
Indio, CA 92202 · last Jan 24, first Dec 10
Salton City, CA 92275 · last Jan 6, first Dec 22
La Quinta, CA 92247 · last Feb 7, first Dec 2
Niland, CA 92257 · last Jan 6, first Dec 22
Indian Wells, CA 92210 · last Feb 7, first Dec 2
Palm Desert, CA 92261 · last Jan 10, first Dec 23

Frequently asked questions

When is the last frost in Mecca, CA?: For ZIP code 92254, the average last spring frost (32°F) is January 6, based on NOAA 1991-2020 climate normals for the Mecca Fire Stn, CA weather station. There is a 1-in-10 chance of a frost after February 4.
When is the first frost in Mecca, CA?: The average first fall frost (32°F) is December 22. There is a 1-in-10 chance of frost by December 4, so tender plants are at risk from that point on.
How long is the growing season in 92254?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 352 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.