FrostDateByZip

Frost dates for 92587Quail Valley, CA

The average last spring frost in Quail Valley is January 28 and the average first fall frost is December 18, giving a typical growing season of about 329 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost
Jan 28

Safer after Feb 27 (1-in-10 risk)

Average first fall frost
Dec 18

Possible by Dec 1 (1-in-10 risk)

Growing season
329 days

First frost typically in 52 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)Jan 29 · Feb 28 · Apr 2Nov 15 · Dec 2 · Dec 18274 days100%
Frost / freeze (32°F)Dec 24 · Jan 28 · Feb 27Dec 1 · Dec 18 · Jan 24329 days91%
Hard freeze (28°F)Dec 12 · Jan 1 · Feb 9Dec 9 · Dec 27 · Feb 3365 days38%

Where these dates come from

ZIP code 92587 is matched to the NOAA station Elsinore, CA, 9.6 km away, at 1,268 ft elevation (277 ft lower than the ZIP code's center). Nearby stations for comparison:

StationElevationAvg last frostAvg first frost
Elsinore, CA (used)1,268 ftJan 28Dec 18
San Jacinto, CA1,525 ftJan 31Dec 10
Riverside Fire Stn 3, CA840 ftJan 9Dec 25
Fallbrook 5 Ne, CA1,140 ftFeb 2Jan 30

Frost dates near Quail Valley

Frequently asked questions

When is the last frost in Quail Valley, CA?
For ZIP code 92587, the average last spring frost (32°F) is January 28, based on NOAA 1991-2020 climate normals for the Elsinore, CA weather station. There is a 1-in-10 chance of a frost after February 27.
When is the first frost in Quail Valley, CA?
The average first fall frost (32°F) is December 18. There is a 1-in-10 chance of frost by December 1, so tender plants are at risk from that point on.
How long is the growing season in 92587?
In half of years, the frost-free season (between the last and first 32°F frost) is at least 329 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.