Frost Dates for Stockton, CA 95206

Last spring frost February 13 · First fall frost November 30 · 290 frost-free days · USDA Zone 9b

Frost probability for 95206

Frost10%50%90%
Spring (last frost)March 14February 13January 15
Fall (first frost)November 11November 30December 17

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (16.2 km away); the 50% date is the median year.

Frost dates by ZIP code in Stockton, CA

ZIPLast spring frost (50%)First fall frost (50%)Zone
95206February 13November 309b
95207February 26November 209b
95209February 26November 209b
95210February 26November 209b
95205February 26November 209b
95219February 6December 19b
95204February 26November 209b
95212February 26November 209b
95215February 26November 209b
95203February 26November 209b
95202February 26November 209b
95211February 26November 20Zone 7b–8a

Month by month in Stockton

MonthWhat to do
JanuaryStart herbs, basil, and squash indoors (4–6 weeks before frost). Direct sow peas, spinach, and lettuce if soil is workable.
FebruaryLast frost around February 13. Transplant cold-hardy crops (broccoli, kale, cabbage). Harden off tomato and pepper seedlings.
MarchFrost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini.
AprilSuccession plant lettuce and greens. Keep beds weeded and watered consistently.
MayHarvest regularly to encourage production. Monitor for pests and disease.
JuneMidsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall.
JulyDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
AugustDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
SeptemberDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
OctoberFirst fall frost approaching (around November 30). Transplant fall brassicas. Sow spinach, arugula, and radishes.
NovemberFirst frost around November 30. Harvest tomatoes and peppers before frost. Cover cold-hardy crops with row covers to extend the season.
DecemberHarvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year.

What grows in a 290-day season

Frequently Asked Questions

What is the last frost date for Stockton, CA (ZIP 95206)?

The median last spring frost date for Stockton, CA (ZIP code 95206) is around February 13. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area.

What is the first fall frost date in Stockton, CA?

The median first fall frost date for Stockton, CA is around November 30. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses.

How long is the growing season in Stockton, CA?

The frost-free growing season in Stockton is about 290 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is Stockton, CA?

Based on frost date patterns, Stockton falls approximately in 9b. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in Stockton, CA?

Start tomato seeds indoors 6–8 weeks before your last frost date (around February 13). For Stockton, that's roughly December 19 to January 2. Transplant outdoors 1–2 weeks after your last frost.

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