Frost dates 2026–2027

Frost dates for Wickenburg, Arizona

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Wickenburg, 1.7 mi away (close match).

Last spring frostMar 7
First fall frostNov 20
254 frost-free days
Last spring frostMar 71 year in 10 after Apr 8
First fall frostNov 201 year in 10 by Nov 4
Growing season254 daysbetween median 32°F dates
Hardiness zoneZone 9a20 to 25°F average extreme low

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Will it freeze in Wickenburg in the next 7 nights?

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

Tonight: forecast low 49°F. Above 36°F.

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

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

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 Wickenburg

The median first fall hard-freeze date (28°F) is December 2, from NOAA’s 1991–2020 Climate Normals at Wickenburg. 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 Mar 11 · Apr 3 · Apr 25 Oct 24 · Nov 9 · Nov 22 219 days
32°F freeze Feb 14 · Mar 7 · Apr 8 Nov 4 · Nov 20 · Dec 5 254 days
28°F hard freeze Jan 15 · Feb 14 · Mar 6 Nov 14 · Dec 2 · Dec 22 290 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00029287. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Wickenburg

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 Wickenburg, AZ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Wickenburg (station USC00029287, elevation 2,095 ft), 1.7 mi from Wickenburg. 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 Wickenburg

CityDistanceLast spring frostFirst fall frost
Surprise, AZ 29 mi Feb 5 Dec 11
Peoria, AZ 30 mi Feb 5 Dec 11
El Mirage, AZ 37 mi Jan 20 Dec 15
Youngtown, AZ 39 mi Jan 20 Dec 15
Buckeye, AZ 39 mi Jan 7 Dec 24
Litchfield Park, AZ 41 mi Jan 7 Dec 24
Glendale, AZ 45 mi Jan 20 Dec 15
Prescott, AZ 46 mi Apr 30 Oct 20
Cave Creek, AZ 46 mi Feb 4 Dec 16
Tolleson, AZ 47 mi Jan 7 Dec 24

Frequently asked questions

When is the last frost in Wickenburg?

On average, the last spring frost (32°F) in Wickenburg is around March 7. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after February 14.

When is the first frost in Wickenburg?

The first fall frost (32°F) usually arrives around November 20. There’s a 10% chance of a freeze by November 4 and a 90% chance by December 5.

Can it frost in Wickenburg 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 April 3.

What growing zone is Wickenburg?

Wickenburg is in USDA Plant Hardiness Zone 9a (average annual extreme minimum temperature 20 to 25°F), based on the 2023 USDA map for ZIP code 85390. See growing zones in Arizona.

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