City Creek Wtp, UT Frost Dates & Growing Season

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

Last spring frost
May 13
~50% chance of frost after
First fall frost
Oct 7
~50% chance of frost before
Growing season
147 days
frost-free stretch
USDA zone
≈ 6a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Apr 27 May 13 May 31
First fall frost Oct 22 Oct 7 Sep 26
Hard freeze (28°F), median last Apr 28 · first Oct 19

Computed from NOAA 1991–2020 climate normals at the CITY CREEK WTP 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 City Creek Wtp

Computed from City Creek Wtp'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 Mar 18 – Apr 1 May 20 – May 27
🫑 Peppers Mar 4 – Mar 18 May 27 – Jun 3
🥬 Lettuce Apr 1 – Apr 15 Apr 15 – Apr 29 Apr 15 – May 13
🫛 Peas Apr 1 – Apr 15
🥕 Carrots Apr 22 – May 13
🥦 Broccoli Mar 25 – Apr 8 Apr 22 – May 6
🥬 Kale Apr 1 – Apr 15 Apr 15 – Apr 29 Apr 15 – Apr 29
🥒 Cucumbers Apr 15 – Apr 22 May 20 – May 27 May 20 – May 27
🥒 Zucchini Apr 15 – Apr 22 May 20 – May 27 May 20 – May 27
🫘 Green Beans (Bush) May 20 – May 27
🌽 Sweet Corn May 20 – May 27
🌿 Basil Apr 1 – Apr 15 May 20 – May 27 May 27 – Jun 3
🧄 Garlic Fall: Aug 26 – Sep 23

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 City Creek Wtp's dates automatically after a lookup.

Reading the season in City Creek Wtp

At about 147 frost-free days, City Creek Wtp 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 City Creek Wtp, UT?

The average last spring frost in City Creek Wtp is around May 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 City Creek Wtp, UT?

The average first fall frost in City Creek Wtp arrives around Oct 7. 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 City Creek Wtp?

About 147 frost-free days on average, from May 13 to Oct 7. 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 City Creek Wtp 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.