Frost dates 2026–2027

Frost dates for Roosevelt, Utah

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Roosevelt Radio, 1.6 mi away (close match).

Last spring frostMay 23
First fall frostSep 22
121 frost-free days
Last spring frostMay 231 year in 10 after Jun 9
First fall frostSep 221 year in 10 by Sep 8
Growing season121 daysbetween median 32°F dates
Hardiness zoneZone 5b−15 to −10°F average extreme low

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Will it freeze in Roosevelt in the next 7 nights?

No overnight lows at or below 32°F are forecast in Roosevelt 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.

5 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 Roosevelt

The median first fall hard-freeze date (28°F) is October 2, from NOAA’s 1991–2020 Climate Normals at Roosevelt Radio. 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 May 25 · Jun 8 · Jun 27 Aug 30 · Sep 12 · Sep 25 94 days
32°F freeze May 9 · May 23 · Jun 9 Sep 8 · Sep 22 · Oct 3 121 days
28°F hard freeze Apr 27 · May 8 · May 25 Sep 20 · Oct 2 · Oct 15 145 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00427395. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Roosevelt Radio

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 Roosevelt, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Roosevelt Radio (station USC00427395, elevation 5,014 ft), 1.6 mi from Roosevelt. 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 Roosevelt

CityDistanceLast spring frostFirst fall frost
Vernal, UT 26 mi May 7 Oct 6
Price, UT 64 mi May 3 Oct 12
Heber, UT 76 mi Jun 4 Sep 20
Midway, UT 80 mi May 31 Sep 11
Park City, UT 83 mi May 29 Sep 25
Evanston, WY 85 mi Jun 12 Sep 12
Mapleton, UT 85 mi Apr 25 Oct 18
Springville, UT 86 mi Apr 18 Oct 21
Provo, UT 88 mi Apr 18 Oct 21
Spanish Fork, UT 88 mi Apr 25 Oct 18

Frequently asked questions

When is the last frost in Roosevelt?

On average, the last spring frost (32°F) in Roosevelt is around May 23. In about 1 year in 10 it comes after June 9, and in 9 years in 10 it comes after May 9.

When is the first frost in Roosevelt?

The first fall frost (32°F) usually arrives around September 22. There’s a 10% chance of a freeze by September 8 and a 90% chance by October 3.

Can it frost in Roosevelt 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 June 8.

What growing zone is Roosevelt?

Roosevelt is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 84066. See growing zones in Utah.

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