When is the last frost in Sun Valley, CA?

Frost occurs in about 21% of years at the nearest NOAA station (Burbank Glendale Pasadena Ap, CA), so there is no reliable average last frost date.

When is the first frost in Sun Valley, CA?

Frost occurs in about 21% of years at the nearest NOAA station.

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 91353Sun Valley, CA

Frost occurs in about 21% of years near Sun Valley, based on NOAA 1991-2020 records for the Burbank Glendale Pasadena Ap, CA station.

Frost occurs in about 21% of years. Frost-tender plants can usually grow year-round, but cover them if a rare cold snap is forecast.

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 16 · Jan 11 · Feb 21	Nov 30 · Dec 18 · Jan 20	343 days	83%
Frost / freeze (32°F)	Dec 12 · Dec 31 · Jan 15	Dec 11 · Dec 28 · Jan 15	365 days	21%
Hard freeze (28°F)	—	—	365 days	1%

Where these dates come from

ZIP code 91353 is matched to the NOAA station Burbank Glendale Pasadena Ap, CA, 2.2 km away, at 741 ft elevation (66 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Burbank Glendale Pasadena Ap, CA (used)	741 ft	Dec 31	Dec 28
Burbank Valley Pump Plt, CA	655 ft	Jan 2	Dec 26
Van Nuys Ap, CA	770 ft	Dec 31	Dec 30
Northridge Cal State, CA	904 ft	Jan 2	Jan 1

Frost dates near Sun Valley

Sun Valley, CA 91352 · last Dec 31, first Dec 28
North Hollywood, CA 91605 · last Dec 31, first Dec 28
Burbank, CA 91504 · last Jan 2, first Dec 26
Sunland, CA 91040 · last —, first —
Valley Village, CA 91607 · last Jan 2, first Dec 26
Pacoima, CA 91331 · last Dec 31, first Dec 30
Van Nuys, CA 91401 · last Dec 31, first Dec 28
Panorama City, CA 91402 · last Dec 31, first Dec 30

Frequently asked questions

When is the last frost in Sun Valley, CA?: Frost occurs in about 21% of years at the nearest NOAA station (Burbank Glendale Pasadena Ap, CA), so there is no reliable average last frost date.
When is the first frost in Sun Valley, CA?: Frost occurs in about 21% of years at the nearest NOAA station.
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.