When is the last frost in Lukeville, AZ?

For ZIP code 85341, the average last spring frost (32°F) is February 4, based on NOAA 1991-2020 climate normals for the Organ Pipe Cactus Nm, AZ weather station. There is a 1-in-10 chance of a frost after March 3.

When is the first frost in Lukeville, AZ?

The average first fall frost (32°F) is December 15. There is a 1-in-10 chance of frost by November 26, so tender plants are at risk from that point on.

How long is the growing season in 85341?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 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 85341Lukeville, AZ

The average last spring frost in Lukeville is February 4 and the average first fall frost is December 15, giving a typical growing season of about 314 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 4
Average first fall frost: Dec 15
Growing season: 314 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 31 · Feb 28 · Mar 27	Nov 11 · Dec 1 · Dec 17	273 days	100%
Frost / freeze (32°F)	Dec 31 · Feb 4 · Mar 3	Nov 26 · Dec 15 · Jan 9	314 days	96%
Hard freeze (28°F)	Dec 22 · Jan 18 · Feb 23	Dec 8 · Jan 5 · Feb 9	361 days	56%

Where these dates come from

ZIP code 85341 is matched to the NOAA station Organ Pipe Cactus Nm, AZ, 8.2 km away, at 1,678 ft elevation (277 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Organ Pipe Cactus Nm, AZ (used)	1,678 ft	Feb 4	Dec 15
Ajo, AZ	1,751 ft	Jan 10	Dec 21
Kitt Peak, AZ	6,790 ft	Apr 26	Nov 4
Gila Bend 2Se, AZ	794 ft	Jan 23	Dec 11

Frost dates near Lukeville

Ajo, AZ 85321 · last Jan 10, first Dec 21
Sells, AZ 85634 · last Mar 27, first Nov 9
Topawa, AZ 85639 · last Mar 27, first Nov 9
Dateland, AZ 85333 · last Jan 25, first Dec 13
Sasabe, AZ 85633 · last Mar 21, first Nov 20
Stanfield, AZ 85172 · last Feb 5, first Dec 6
Tacna, AZ 85352 · last Feb 13, first Dec 1
Casa Grande, AZ 85193 · last Feb 5, first Dec 6

Frequently asked questions

When is the last frost in Lukeville, AZ?: For ZIP code 85341, the average last spring frost (32°F) is February 4, based on NOAA 1991-2020 climate normals for the Organ Pipe Cactus Nm, AZ weather station. There is a 1-in-10 chance of a frost after March 3.
When is the first frost in Lukeville, AZ?: The average first fall frost (32°F) is December 15. There is a 1-in-10 chance of frost by November 26, so tender plants are at risk from that point on.
How long is the growing season in 85341?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 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.