Scofield Dam, UT Frost Dates & Growing Season

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

Last spring frost
Jun 15
~50% chance of frost after
First fall frost
Sep 12
~50% chance of frost before
Growing season
89 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 2 Jun 15 Jul 1
First fall frost Sep 24 Sep 12 Aug 29
Hard freeze (28°F), median last Jun 3 · first Sep 21

Computed from NOAA 1991–2020 climate normals at the SCOFIELD DAM 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 Scofield Dam

Computed from Scofield Dam'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 20 – May 4 Jun 22 – Jun 29
🫑 Peppers Apr 6 – Apr 20 Jun 29 – Jul 6
🥬 Lettuce May 4 – May 18 May 18 – Jun 1 May 18 – Jun 15
🫛 Peas May 4 – May 18
🥕 Carrots May 25 – Jun 15
🥦 Broccoli Apr 27 – May 11 May 25 – Jun 8
🥬 Kale May 4 – May 18 May 18 – Jun 1 May 18 – Jun 1
🥒 Cucumbers May 18 – May 25 Jun 22 – Jun 29 Jun 22 – Jun 29
🥒 Zucchini May 18 – May 25 Jun 22 – Jun 29 Jun 22 – Jun 29
🫘 Green Beans (Bush) Jun 22 – Jun 29
🌽 Sweet Corn Jun 22 – Jun 29
🌿 Basil May 4 – May 18 Jun 22 – Jun 29 Jun 29 – Jul 6
🧄 Garlic Fall: Aug 1 – Aug 29

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 Scofield Dam's dates automatically after a lookup.

Reading the season in Scofield Dam

At about 89 frost-free days, Scofield Dam 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 Scofield Dam, UT?

The average last spring frost in Scofield Dam is around Jun 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 Scofield Dam, UT?

The average first fall frost in Scofield Dam arrives around Sep 12. 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 Scofield Dam?

About 89 frost-free days on average, from Jun 15 to Sep 12. 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 Scofield Dam 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.