Last frost date in Perris, California

January 28

Average last frost in spring. In an early year (1 in 10) it's over by December 24; in a late year (1 in 10) it comes after February 27.

December 18

Average first frost in fall. 1 year in 10 it comes by December 1.

A 32°F night happens here about 9 years in 10; in those years these are the usual dates.

Source: NOAA U.S. Climate Normals 1991–2020, station Elsinore (USC00042805), 10.1 miles from Perris, elevation 1,268 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Perris, California
Early yearAverageLate year
Last frost in springDec 24Jan 28Feb 27
First frost in fallDec 1Dec 18Jan 24

An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.

Frost-free days in an average year: 329

Planting calendar for Perris

Fall planting

USDA dates for places whose average first freeze is about December 20 (Perris: December 18).

USDA lists horseradish as generally spring-planted here.

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.

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