Newhall 5NW, CA Frost Dates & Growing Season

The two dates every Newhall 5NW garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jan 8
~50% chance of frost after
First fall frost
Jan 1
~50% chance of frost before
Growing season
358 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 8 Jan 8 Mar 10
First fall frost Feb 25 Jan 1 Nov 30

Computed from NOAA 1991–2020 climate normals at the NEWHALL 5NW 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 Newhall 5NW

Computed from Newhall 5NW'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 13 – Nov 27 Jan 15 – Jan 22
🫑 Peppers Oct 30 – Nov 13 Jan 22 – Jan 29
🥬 Lettuce Nov 27 – Dec 11 Dec 11 – Dec 25 Dec 11 – Jan 8
🫛 Peas Nov 27 – Dec 11
🥕 Carrots Dec 18 – Jan 8
🥦 Broccoli Nov 20 – Dec 4 Dec 18 – Jan 1
🥬 Kale Nov 27 – Dec 11 Dec 11 – Dec 25 Dec 11 – Dec 25
🥒 Cucumbers Dec 11 – Dec 18 Jan 15 – Jan 22 Jan 15 – Jan 22
🥒 Zucchini Dec 11 – Dec 18 Jan 15 – Jan 22 Jan 15 – Jan 22
🫘 Green Beans (Bush) Jan 15 – Jan 22
🌽 Sweet Corn Jan 15 – Jan 22
🌿 Basil Nov 27 – Dec 11 Jan 15 – Jan 22 Jan 22 – Jan 29
🧄 Garlic Fall: Nov 20 – Dec 18

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 Newhall 5NW's dates automatically after a lookup.

Reading the season in Newhall 5NW

With roughly 358 frost-free days, Newhall 5NW 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 Jan 1 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Newhall 5NW, CA?

The average last spring frost in Newhall 5NW is around Jan 8, 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 Newhall 5NW, CA?

The average first fall frost in Newhall 5NW arrives around Jan 1. 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 Newhall 5NW?

About 358 frost-free days on average, from Jan 8 to Jan 1. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Newhall 5NW 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.