Frost dates 2026–2027

Frost dates for Winslow, Arizona

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Winslow Municipal Airport, 0.7 mi away (close match).

Last spring frostApr 27
First fall frostOct 18
174 frost-free days
Last spring frostApr 271 year in 10 after May 14
First fall frostOct 181 year in 10 by Oct 5
Growing season174 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Winslow in the next 7 nights?

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

7 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 Winslow

The median first fall hard-freeze date (28°F) is October 27, from NOAA’s 1991–2020 Climate Normals at Winslow Municipal Airport. 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 25 · May 8 · May 26 Sep 28 · Oct 9 · Oct 21 152 days
32°F freeze Apr 12 · Apr 27 · May 14 Oct 5 · Oct 18 · Nov 1 174 days
28°F hard freeze Mar 27 · Apr 13 · May 1 Oct 13 · Oct 27 · Nov 10 196 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00023194. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Winslow Municipal Airport

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 Winslow, AZ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Winslow Municipal Airport (station USW00023194, elevation 4,886 ft), 0.7 mi from Winslow. 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 Winslow

CityDistanceLast spring frostFirst fall frost
Snowflake, AZ 49 mi May 11 Oct 10
Flagstaff, AZ 53 mi Jun 4 Sep 28
Sedona, AZ 62 mi Apr 1 Nov 17
Payson, AZ 64 mi Apr 29 Oct 24
Show Low, AZ 65 mi May 5 Oct 15
Camp Verde, AZ 72 mi Apr 16 Oct 30
Cottonwood, AZ 75 mi Mar 30 Nov 10
Prescott Valley, AZ 96 mi Apr 30 Oct 20
Chino Valley, AZ 98 mi Apr 27 Oct 24
Prescott, AZ 103 mi Apr 30 Oct 20

Frequently asked questions

When is the last frost in Winslow?

On average, the last spring frost (32°F) in Winslow is around April 27. In about 1 year in 10 it comes after May 14, and in 9 years in 10 it comes after April 12.

When is the first frost in Winslow?

The first fall frost (32°F) usually arrives around October 18. There’s a 10% chance of a freeze by October 5 and a 90% chance by November 1.

Can it frost in Winslow 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 8.

What growing zone is Winslow?

Winslow 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 86047. See growing zones in Arizona.

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