Los Banos Det Resv, CA Frost Dates & Growing Season

The two dates every Los Banos Det Resv garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jan 13
~50% chance of frost after
First fall frost
Dec 14
~50% chance of frost before
Growing season
335 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 22 Jan 13 Feb 10
First fall frost Jan 10 Dec 14 Dec 1
Hard freeze (28°F), median last Jan 1 · first Dec 25

Computed from NOAA 1991–2020 climate normals at the LOS BANOS DET RESV 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 Los Banos Det Resv

Computed from Los Banos Det Resv'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 18 – Dec 2 Jan 20 – Jan 27
🫑 Peppers Nov 4 – Nov 18 Jan 27 – Feb 3
🥬 Lettuce Dec 2 – Dec 16 Dec 16 – Dec 30 Dec 16 – Jan 13
🫛 Peas Dec 2 – Dec 16
🥕 Carrots Dec 23 – Jan 13
🥦 Broccoli Nov 25 – Dec 9 Dec 23 – Jan 6
🥬 Kale Dec 2 – Dec 16 Dec 16 – Dec 30 Dec 16 – Dec 30
🥒 Cucumbers Dec 16 – Dec 23 Jan 20 – Jan 27 Jan 20 – Jan 27
🥒 Zucchini Dec 16 – Dec 23 Jan 20 – Jan 27 Jan 20 – Jan 27
🫘 Green Beans (Bush) Jan 20 – Jan 27
🌽 Sweet Corn Jan 20 – Jan 27
🌿 Basil Dec 2 – Dec 16 Jan 20 – Jan 27 Jan 27 – Feb 3
🧄 Garlic Fall: Nov 2 – Nov 30

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 Los Banos Det Resv's dates automatically after a lookup.

Reading the season in Los Banos Det Resv

With roughly 335 frost-free days, Los Banos Det Resv 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 14 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Los Banos Det Resv, CA?

The average last spring frost in Los Banos Det Resv is around Jan 13, 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 Los Banos Det Resv, CA?

The average first fall frost in Los Banos Det Resv arrives around Dec 14. 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 Los Banos Det Resv?

About 335 frost-free days on average, from Jan 13 to Dec 14. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Los Banos Det Resv 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.