Last spring frost
Apr 18
Frost Dates for Wendover, UT
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
In an average year around Wendover, UT, the last spring frost (32°F) is about Apr 18 and the first fall frost is about Oct 23, giving roughly a 188-day growing season. To be safe most years, wait until Mar 31 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 15 | Apr 30 | Apr 15 |
| Freeze (32°F) | May 5 | Apr 18 | Mar 31 |
| Hard (28°F) | Apr 20 | Mar 31 | Mar 14 |
| Severe (24°F) | Apr 3 | Mar 14 | Feb 27 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 15 | May 9 | May 6 | May 2 | Apr 30 | Apr 27 | Apr 23 | Apr 20 | Apr 15 |
| 32°F | May 5 | Apr 29 | Apr 25 | Apr 20 | Apr 18 | Apr 13 | Apr 9 | Apr 4 | Mar 31 |
| 28°F | Apr 20 | Apr 13 | Apr 7 | Apr 3 | Mar 31 | Mar 28 | Mar 24 | Mar 20 | Mar 14 |
| 24°F | Apr 3 | Mar 28 | Mar 22 | Mar 18 | Mar 14 | Mar 10 | Mar 7 | Mar 4 | Feb 27 |
| 20°F | Mar 15 | Mar 9 | Mar 6 | Mar 2 | Feb 28 | Feb 23 | Feb 20 | Feb 15 | Feb 9 |
| 16°F | Mar 2 | Feb 25 | Feb 19 | Feb 15 | Feb 12 | Feb 8 | Feb 4 | Feb 1 | Jan 24 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 1 | Oct 14 | Oct 25 |
| Freeze (32°F) | Oct 13 | Oct 23 | Nov 4 |
| Hard (28°F) | Oct 20 | Nov 1 | Nov 13 |
| Severe (24°F) | Oct 27 | Nov 9 | Nov 21 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 1 | Oct 6 | Oct 9 | Oct 12 | Oct 14 | Oct 17 | Oct 19 | Oct 22 | Oct 25 |
| 32°F | Oct 13 | Oct 17 | Oct 19 | Oct 21 | Oct 23 | Oct 26 | Oct 28 | Nov 1 | Nov 4 |
| 28°F | Oct 20 | Oct 24 | Oct 27 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 13 |
| 24°F | Oct 27 | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 12 | Nov 14 | Nov 18 | Nov 21 |
| 20°F | Nov 2 | Nov 9 | Nov 12 | Nov 16 | Nov 19 | Nov 22 | Nov 24 | Nov 28 | Dec 2 |
| 16°F | Nov 11 | Nov 18 | Nov 23 | Nov 26 | Nov 29 | Dec 1 | Dec 5 | Dec 8 | Dec 15 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Wendover Ap Awos, Ut, about 16.9 miles away@if(!empty($station['elevation_ft'])), at 4,237 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Wendover, UT?
On average, the last spring frost (32°F) around Wendover, UT is about Apr 18. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 31.
When is the first frost in the fall?
The first fall frost around Wendover, UT typically arrives about Oct 23. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 18 on average, or Mar 31 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 188 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 84083 Planting calendar → Utah frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026