Antioch Pumping Plt #3, CA Frost Dates & Growing Season

The two dates every Antioch Pumping Plt #3 garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jan 12
~50% chance of frost after
First fall frost
Dec 19
~50% chance of frost before
Growing season
341 days
frost-free stretch
USDA zone
≈ 10b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Dec 20 Jan 12 Feb 1
First fall frost Jan 12 Dec 19 Nov 29
Hard freeze (28°F), median last Jan 2 · first Dec 29

Computed from NOAA 1991–2020 climate normals at the ANTIOCH PUMPING PLT #3 station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Antioch Pumping Plt #3

Computed from Antioch Pumping Plt #3's own frost dates. Click any crop for the full zone-10 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Nov 17 – Dec 1 Jan 19 – Jan 26
🫑 Peppers Nov 3 – Nov 17 Jan 26 – Feb 2
🥬 Lettuce Dec 1 – Dec 15 Dec 15 – Dec 29 Dec 15 – Jan 12
🫛 Peas Dec 1 – Dec 15
🥕 Carrots Dec 22 – Jan 12
🥦 Broccoli Nov 24 – Dec 8 Dec 22 – Jan 5
🥬 Kale Dec 1 – Dec 15 Dec 15 – Dec 29 Dec 15 – Dec 29
🥒 Cucumbers Dec 15 – Dec 22 Jan 19 – Jan 26 Jan 19 – Jan 26
🥒 Zucchini Dec 15 – Dec 22 Jan 19 – Jan 26 Jan 19 – Jan 26
🫘 Green Beans (Bush) Jan 19 – Jan 26
🌽 Sweet Corn Jan 19 – Jan 26
🌿 Basil Dec 1 – Dec 15 Jan 19 – Jan 26 Jan 26 – Feb 2
🧄 Garlic Fall: Nov 7 – Dec 5

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Antioch Pumping Plt #3's dates automatically after a lookup.

Reading the season in Antioch Pumping Plt #3

With roughly 341 frost-free days, Antioch Pumping Plt #3 gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Dec 19 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Antioch Pumping Plt #3, CA?

The average last spring frost in Antioch Pumping Plt #3 is around Jan 12, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Antioch Pumping Plt #3, CA?

The average first fall frost in Antioch Pumping Plt #3 arrives around Dec 19. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Antioch Pumping Plt #3?

About 341 frost-free days on average, from Jan 12 to Dec 19. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Antioch Pumping Plt #3 in?

USDA zone 10b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.