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Will it freeze in Mapleton in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 32°F (Fri, Nov 6, 6:00 PM MST to Sat, Nov 7, 6:00 AM MST).
Tonight: forecast low 36°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 36°F Frost possible · Mostly Cloudy
- Fri, Nov 6 32°F Freeze · Mostly Clear
- Sat, Nov 7 36°F Frost possible · Clear
- Sun, Nov 8 41°F Above 36°F · Mostly Clear
- Mon, Nov 9 42°F Above 36°F · Partly Cloudy
- Tue, Nov 10 40°F Above 36°F · Partly Cloudy
- Wed, Nov 11 40°F Above 36°F · Mostly Clear
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 Mapleton
The median first fall hard-freeze date (28°F) is October 30, from NOAA’s 1991–2020 Climate Normals at Spanish Fk Pwr House. 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 26 · May 11 · May 31 | Sep 22 · Oct 6 · Oct 20 | 146 days |
| 32°F freeze | Apr 10 · Apr 25 · May 13 | Oct 4 · Oct 18 · Nov 1 | 174 days |
| 28°F hard freeze | Mar 20 · Apr 9 · Apr 25 | Oct 14 · Oct 30 · Nov 13 | 201 days |
Average high temperature by month
1991–2020 normals at Spanish Fk Pwr House
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 Mapleton, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Spanish Fk Pwr House (station USC00428119, elevation 4,720 ft), 3.1 mi from Mapleton. 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 Mapleton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Spanish Fork, UT | 3.7 mi | Apr 25 | Oct 18 |
| Springville, UT | 3.7 mi | Apr 18 | Oct 21 |
| Salem, UT | 6.8 mi | Apr 25 | Oct 18 |
| Provo, UT | 9.3 mi | Apr 18 | Oct 21 |
| Payson, UT | 11 mi | May 4 | Oct 11 |
| Orem, UT | 14 mi | Apr 19 | Oct 19 |
| Santaquin, UT | 16 mi | May 4 | Oct 11 |
| Vineyard, UT | 16 mi | Apr 19 | Oct 19 |
| Lindon, UT | 17 mi | Apr 17 | Oct 25 |
| Pleasant Grove, UT | 19 mi | Apr 17 | Oct 25 |
Frequently asked questions
When is the last frost in Mapleton?
On average, the last spring frost (32°F) in Mapleton is around April 25. In about 1 year in 10 it comes after May 13, and in 9 years in 10 it comes after April 10.
When is the first frost in Mapleton?
The first fall frost (32°F) usually arrives around October 18. There’s a 10% chance of a freeze by October 4 and a 90% chance by November 1.
Can it frost in Mapleton 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 11.
What growing zone is Mapleton?
Mapleton 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 84664. See growing zones in Utah.
More: all Utah frost dates · Utah growing zones · frost vs. freeze