When is the last frost in Arlington, AZ?

For ZIP code 85322, the average last spring frost (32°F) is January 23, based on NOAA 1991-2020 climate normals for the Gila Bend 2Se, AZ weather station. There is a 1-in-10 chance of a frost after February 19.

When is the first frost in Arlington, AZ?

The average first fall frost (32°F) is December 11. There is a 1-in-10 chance of frost by November 24, so tender plants are at risk from that point on.

How long is the growing season in 85322?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 days long.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 85322Arlington, AZ

The average last spring frost in Arlington is January 23 and the average first fall frost is December 11, giving a typical growing season of about 323 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 23
Average first fall frost: Dec 11
Growing season: 323 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Jan 18 · Feb 14 · Mar 5	Nov 15 · Nov 30 · Dec 15	288 days	100%
Frost / freeze (32°F)	Dec 25 · Jan 23 · Feb 19	Nov 24 · Dec 11 · Dec 30	323 days	97%
Hard freeze (28°F)	Dec 13 · Jan 5 · Feb 1	Dec 5 · Dec 25 · Jan 22	355 days	69%

Where these dates come from

ZIP code 85322 is matched to the NOAA station Gila Bend 2Se, AZ, 42.9 km away, at 794 ft elevation (26 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Gila Bend 2Se, AZ (used)	794 ft	Jan 23	Dec 11
Painted Rock Dam, AZ	568 ft	Jan 21	Dec 15
Litchfield Park, AZ	1,040 ft	Jan 7	Dec 24
Youngtown, AZ	1,135 ft	Jan 20	Dec 15

Frost dates near Arlington

Palo Verde, AZ 85343 · last Jan 7, first Dec 24
Tonopah, AZ 85354 · last Feb 5, first Dec 11
Buckeye, AZ 85326 · last Jan 7, first Dec 24
Goodyear, AZ 85338 · last Jan 7, first Dec 24
Litchfield Park, AZ 85340 · last Jan 7, first Dec 24
Gila Bend, AZ 85337 · last Jan 23, first Dec 11
Waddell, AZ 85355 · last Jan 20, first Dec 15
Avondale, AZ 85323 · last Jan 7, first Dec 24

Frequently asked questions

When is the last frost in Arlington, AZ?: For ZIP code 85322, the average last spring frost (32°F) is January 23, based on NOAA 1991-2020 climate normals for the Gila Bend 2Se, AZ weather station. There is a 1-in-10 chance of a frost after February 19.
When is the first frost in Arlington, AZ?: The average first fall frost (32°F) is December 11. There is a 1-in-10 chance of frost by November 24, so tender plants are at risk from that point on.
How long is the growing season in 85322?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 days long.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.