Eastonville 2 NNW, CO Frost Dates & Growing Season

The two dates every Eastonville 2 NNW garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
May 29
~50% chance of frost after
First fall frost
Sep 21
~50% chance of frost before
Growing season
115 days
frost-free stretch
USDA zone
≈ 5b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost May 15 May 29 Jun 13
First fall frost Oct 1 Sep 21 Sep 9
Hard freeze (28°F), median last May 14 · first Sep 29

Computed from NOAA 1991–2020 climate normals at the EASTONVILLE 2 NNW 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 Eastonville 2 NNW

Computed from Eastonville 2 NNW's own frost dates. Click any crop for the full zone-5 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Apr 3 – Apr 17 Jun 5 – Jun 12
🫑 Peppers Mar 20 – Apr 3 Jun 12 – Jun 19
🥬 Lettuce Apr 17 – May 1 May 1 – May 15 May 1 – May 29
🫛 Peas Apr 17 – May 1
🥕 Carrots May 8 – May 29
🥦 Broccoli Apr 10 – Apr 24 May 8 – May 22
🥬 Kale Apr 17 – May 1 May 1 – May 15 May 1 – May 15
🥒 Cucumbers May 1 – May 8 Jun 5 – Jun 12 Jun 5 – Jun 12
🥒 Zucchini May 1 – May 8 Jun 5 – Jun 12 Jun 5 – Jun 12
🫘 Green Beans (Bush) Jun 5 – Jun 12
🌽 Sweet Corn Jun 5 – Jun 12
🌿 Basil Apr 17 – May 1 Jun 5 – Jun 12 Jun 12 – Jun 19
🧄 Garlic Fall: Aug 10 – Sep 7

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 Eastonville 2 NNW's dates automatically after a lookup.

Reading the season in Eastonville 2 NNW

At about 115 frost-free days, Eastonville 2 NNW rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.

Frequently asked questions

When is the last frost in Eastonville 2 NNW, CO?

The average last spring frost in Eastonville 2 NNW is around May 29, 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 Eastonville 2 NNW, CO?

The average first fall frost in Eastonville 2 NNW arrives around Sep 21. 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 Eastonville 2 NNW?

About 115 frost-free days on average, from May 29 to Sep 21. That favors short-season varieties and transplants for warm-season crops, with cool-season vegetables doing the heavy lifting in spring and fall.

What USDA zone is Eastonville 2 NNW in?

USDA zone 5b 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.