Corcoran Irrig Dist, CA Frost Dates & Growing Season

The two dates every Corcoran Irrig Dist garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Feb 15
~50% chance of frost after
First fall frost
Nov 27
~50% chance of frost before
Growing season
285 days
frost-free stretch
USDA zone
≈ 9b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Jan 17 Feb 15 Mar 10
First fall frost Dec 13 Nov 27 Nov 12
Hard freeze (28°F), median last Jan 16 · first Dec 8

Computed from NOAA 1991–2020 climate normals at the CORCORAN IRRIG DIST 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 Corcoran Irrig Dist

Computed from Corcoran Irrig Dist's own frost dates. Click any crop for the full zone-9 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Dec 21 – Jan 4 Feb 22 – Mar 1
🫑 Peppers Dec 7 – Dec 21 Mar 1 – Mar 8
🥬 Lettuce Jan 4 – Jan 18 Jan 18 – Feb 1 Jan 18 – Feb 15
🫛 Peas Jan 4 – Jan 18
🥕 Carrots Jan 25 – Feb 15
🥦 Broccoli Dec 28 – Jan 11 Jan 25 – Feb 8
🥬 Kale Jan 4 – Jan 18 Jan 18 – Feb 1 Jan 18 – Feb 1
🥒 Cucumbers Jan 18 – Jan 25 Feb 22 – Mar 1 Feb 22 – Mar 1
🥒 Zucchini Jan 18 – Jan 25 Feb 22 – Mar 1 Feb 22 – Mar 1
🫘 Green Beans (Bush) Feb 22 – Mar 1
🌽 Sweet Corn Feb 22 – Mar 1
🌿 Basil Jan 4 – Jan 18 Feb 22 – Mar 1 Mar 1 – Mar 8
🧄 Garlic Fall: Oct 16 – Nov 13

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 Corcoran Irrig Dist's dates automatically after a lookup.

Reading the season in Corcoran Irrig Dist

With roughly 285 frost-free days, Corcoran Irrig Dist 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 Nov 27 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Corcoran Irrig Dist, CA?

The average last spring frost in Corcoran Irrig Dist is around Feb 15, 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 Corcoran Irrig Dist, CA?

The average first fall frost in Corcoran Irrig Dist arrives around Nov 27. 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 Corcoran Irrig Dist?

About 285 frost-free days on average, from Feb 15 to Nov 27. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Corcoran Irrig Dist in?

USDA zone 9b 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.