Frost dates / Arizona / Yuma

Frost dates in Yuma, AZ

The station on this page is YUMA QUARTERMASTER DEPOT, AZ US (USC00029656), 15.7 miles from the city point. Population in the Census 2024 estimate is 103,559.

Zone 10aUSDA average annual extreme minimum 30°F to 35°F, from ZIP 85349 (9.8 miles from the city point used on this page).

Median last 32°F is January 8. Median first 32°F is December 28. The 50% growing-season length is 362 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

Probability	Date	How to read it
90%	December 17	Earlier date. A last 32°F on or after this day is common.
50%	January 8	Median.
10%	February 19	Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

Probability	Date	How to read it
10%	December 11	Earlier date. A first 32°F on or before this day is uncommon.
50%	December 28	Median.
90%	February 7	Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this long	Days
10%	365
50%	362
90%	323

28°F threshold

	10%	50%	90%
Last, on or after	February 16	January 1	December 19
First, on or before	December 16	December 31	February 10
Season at least	365 days	365 days	353 days

36°F threshold

	10%	50%	90%
Last, on or after	February 28	January 28	December 25
First, on or before	November 29	December 16	January 5
Season at least	356 days	324 days	285 days

Station YUMA QUARTERMASTER DEPOT, AZ US (USC00029656). Completeness flag R, 18 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 57%. Freeze dates are conditional on that threshold occurring. Elevation 48.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Check a crop against this station

Yuma, AZ

Zone 10aAverage annual extreme minimum 30°F to 35°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Arizona. Nearest qualified station: YUMA QUARTERMASTER DEPOT, AZ US (USC00029656), 15.7 miles. Median last 32°F January 8. Median first 32°F December 28. The 50% growing-season length is 362 days.

Open the ZIP page

32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	February 19	January 8	December 17
First 32°F on or before	December 11	December 28	February 7

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

Planting calendar

Frost dates for Arizona are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.

Date checks use your device’s calendar and appear after the page loads.