Hatch, UT Frost Dates & Growing Season

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

Last spring frost
Jun 19
~50% chance of frost after
First fall frost
Sep 13
~50% chance of frost before
Growing season
86 days
frost-free stretch
USDA zone
≈ 6a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Jun 5 Jun 19 Jul 2
First fall frost Sep 22 Sep 13 Sep 1
Hard freeze (28°F), median last Jun 6 · first Sep 22

Computed from NOAA 1991–2020 climate normals at the HATCH 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 Hatch

Computed from Hatch's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Apr 24 – May 8 Jun 26 – Jul 3
🫑 Peppers Apr 10 – Apr 24 Jul 3 – Jul 10
🥬 Lettuce May 8 – May 22 May 22 – Jun 5 May 22 – Jun 19
🫛 Peas May 8 – May 22
🥕 Carrots May 29 – Jun 19
🥦 Broccoli May 1 – May 15 May 29 – Jun 12
🥬 Kale May 8 – May 22 May 22 – Jun 5 May 22 – Jun 5
🥒 Cucumbers May 22 – May 29 Jun 26 – Jul 3 Jun 26 – Jul 3
🥒 Zucchini May 22 – May 29 Jun 26 – Jul 3 Jun 26 – Jul 3
🫘 Green Beans (Bush) Jun 26 – Jul 3
🌽 Sweet Corn Jun 26 – Jul 3
🌿 Basil May 8 – May 22 Jun 26 – Jul 3 Jul 3 – Jul 10
🧄 Garlic Fall: Aug 2 – Aug 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 Hatch's dates automatically after a lookup.

Reading the season in Hatch

At about 86 frost-free days, Hatch 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 Hatch, UT?

The average last spring frost in Hatch is around Jun 19, 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 Hatch, UT?

The average first fall frost in Hatch arrives around Sep 13. 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 Hatch?

About 86 frost-free days on average, from Jun 19 to Sep 13. 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 Hatch in?

USDA zone 6a 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.