Frost dates 2026–2027

Frost dates for Tremonton, Utah

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Tremonton, 1.4 mi away (close match).

Last spring frostApr 24
First fall frostOct 17
175 frost-free days
Last spring frostApr 241 year in 10 after May 9
First fall frostOct 171 year in 10 by Oct 3
Growing season175 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Tremonton in the next 7 nights?

No overnight lows at or below 32°F are forecast in Tremonton during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 35°F. Frost possible.

NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.

2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

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 Tremonton

The median first fall hard-freeze date (28°F) is October 26, from NOAA’s 1991–2020 Climate Normals at Tremonton. This is the 50% probability date, not a forecast for this year.

TemperatureLast 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 23 · May 6 · May 29 Sep 25 · Oct 7 · Oct 19 152 days
32°F freeze Apr 8 · Apr 24 · May 9 Oct 3 · Oct 17 · Nov 1 175 days
28°F hard freeze Mar 20 · Apr 9 · Apr 26 Oct 14 · Oct 26 · Nov 10 199 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00428817. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Tremonton

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 Tremonton, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Tremonton (station USC00428817, elevation 4,310 ft), 1.4 mi from Tremonton. 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 Tremonton

CityDistanceLast spring frostFirst fall frost
Brigham City, UT 16 mi May 5 Oct 5
Nibley, UT 18 mi May 12 Sep 28
Logan, UT 18 mi May 8 Oct 2
Hyrum, UT 19 mi May 12 Sep 28
Perry, UT 19 mi May 5 Oct 5
Providence, UT 19 mi Apr 30 Oct 16
North Logan, UT 20 mi Apr 30 Oct 16
Smithfield, UT 21 mi May 8 Oct 2
Hyde Park, UT 21 mi May 8 Oct 2
Plain City, UT 29 mi Apr 22 Oct 18

Frequently asked questions

When is the last frost in Tremonton?

On average, the last spring frost (32°F) in Tremonton is around April 24. In about 1 year in 10 it comes after May 9, and in 9 years in 10 it comes after April 8.

When is the first frost in Tremonton?

The first fall frost (32°F) usually arrives around October 17. There’s a 10% chance of a freeze by October 3 and a 90% chance by November 1.

Can it frost in Tremonton 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 6.

What growing zone is Tremonton?

Tremonton is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 84312. See growing zones in Utah.

More: all Utah frost dates · Utah growing zones · frost vs. freeze