When Is the Last Frost?

Wallace, CA frost dates

Last spring frostJan 22median date
First fall frostDec 17median date
Growing season329 daysfrost-free
Hardiness zone9bZone 9b

Frost is light and occasional here — typically a few cold nights around midwinter (about 7 a year). Cover tender plants when frost is forecast.

How Wallace compares

Frost probability

Last spring frost
Chance of frost afterDate
90% (early)December 23
50% (median)January 22
10% (safe for tender plants)March 1
First fall frost
Chance of frost beforeDate
10% (early)December 1
50% (median)December 17
90% (late)January 17

Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.

Gardening where frost is rare

Wallace, CA only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:

About these dates

Based on 1991–2020 NOAA climate normals for the Camp Pardee, CA weather station, 13 km away (elevation 659 ft (201 m)).

Frost dates near Wallace

Frequently asked questions

When is the last frost in Wallace, CA?

The median last spring frost in Wallace, CA is January 22. There is still about a 10% chance of frost after March 1, so wait until then to plant frost-tender crops like tomatoes and peppers.

When is the first frost in Wallace, CA?

The median first fall frost is December 17, with about a 10% chance of frost before December 1.

How long is the growing season in Wallace, CA?

About 329 days between the median last spring frost and first fall frost.

What planting zone is Wallace, CA?

Wallace, CA is in USDA hardiness zone 9b.

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