Last frost date in Arroyo Grande, California

February 1

Average last frost in spring. In an early year (1 in 10) it's over by December 18; in a late year (1 in 10) it comes after March 13.

January 4

Average first frost in fall. 1 year in 10 it comes by December 8.

A 32°F night happens here about 5 years in 10; in those years these are the usual dates.

Source: NOAA U.S. Climate Normals 1991–2020, station Pismo Beach (USC00046943), 6.1 miles from Arroyo Grande, elevation 39 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

This station is also the nearest one for Grover Beach, so its frost dates are the same as Arroyo Grande's.

What to plant now

Frost dates for Arroyo Grande, California
Early yearAverageLate year
Last frost in springDec 18Feb 1Mar 13
First frost in fallDec 8Jan 4Feb 27

Frost-free days in an average year: 362

Light frost, frost and hard freeze in Arroyo Grande
Chance in a yearAverage last in springAverage first in fall
Light frost (36°F)10 years in 10Mar 1Dec 14
Frost (32°F)5 years in 10Feb 1Jan 4
Hard freeze (28°F)1 years in 10——

Nights at 32°F or colder in an average year: 1.6

What to plant now in Arroyo Grande

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.

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