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Will it freeze in Lehi in the next 7 nights?
No overnight lows at or below 32°F are forecast in Lehi during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 39°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 39°F Above 36°F · Partly Cloudy
- Fri, Nov 6 36°F Frost possible · Mostly Clear
- Sat, Nov 7 40°F Above 36°F · Mostly Clear
- Sun, Nov 8 44°F Above 36°F · Mostly Clear
- Mon, Nov 9 44°F Above 36°F · Partly Cloudy
- Tue, Nov 10 42°F Above 36°F · Partly Cloudy
- Wed, Nov 11 43°F Above 36°F · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Lehi
The median first fall hard-freeze date (28°F) is October 22, from NOAA’s 1991–2020 Climate Normals at Utah Lake Lehi. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 30 · May 20 · Jun 13 | Sep 16 · Sep 28 · Oct 13 | 131 days |
| 32°F freeze | Apr 14 · Apr 30 · May 27 | Sep 26 · Oct 9 · Oct 25 | 159 days |
| 28°F hard freeze | Mar 28 · Apr 15 · May 2 | Oct 5 · Oct 22 · Nov 6 | 187 days |
Average high temperature by month
1991–2020 normals at Utah Lake Lehi
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Lehi, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Utah Lake Lehi (station USC00428973, elevation 4,505 ft), 4.2 mi from Lehi. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Lehi
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Highland, UT | 3.7 mi | May 3 | Oct 12 |
| American Fork, UT | 5.0 mi | Apr 17 | Oct 25 |
| Bluffdale, UT | 5.6 mi | Apr 18 | Oct 22 |
| Saratoga Springs, UT | 5.6 mi | Apr 30 | Oct 9 |
| Draper, UT | 5.6 mi | Apr 18 | Oct 22 |
| Alpine, UT | 6.2 mi | May 3 | Oct 12 |
| Cedar Hills, UT | 6.2 mi | Apr 17 | Oct 25 |
| Pleasant Grove, UT | 7.5 mi | Apr 17 | Oct 25 |
| Riverton, UT | 8.7 mi | Apr 18 | Oct 22 |
| Herriman, UT | 9.3 mi | Apr 18 | Oct 22 |
Frequently asked questions
When is the last frost in Lehi?
On average, the last spring frost (32°F) in Lehi is around April 30. In about 1 year in 10 it comes after May 27, and in 9 years in 10 it comes after April 14.
When is the first frost in Lehi?
The first fall frost (32°F) usually arrives around October 9. There’s a 10% chance of a freeze by September 26 and a 90% chance by October 25.
Can it frost in Lehi after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 20.
What growing zone is Lehi?
Lehi is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 84043. See growing zones in Utah.
More: all Utah frost dates · Utah growing zones · UV index today in Lehi · frost vs. freeze