Arizona Frost Dates

Arizona has 174 NOAA weather stations with freeze records in the 1991–2020 climate normals. The typical last spring frost ranges from January 4 at Bullhead City to June 23 at Flagstaff 4 Sw; at half the stations it has come by March 30. The first fall frost typically arrives between September 15 at Flagstaff 4 Sw and January 9 at Kofa Mine, with a median of November 12.

The growing season between the typical frosts runs from 81 days at Flagstaff 4 Sw to 365 days at Phoenix Sky Harbor Intl Ap; 226 days at the median station.

At 1 station, NOAA records too few freezes to give a date: frost is rare there.

Every station in Arizona

Typical dates have a 50% chance of a frost after them in spring, and before them in fall; safer dates, 10%. A garden can differ from its nearest station, especially in a valley or on a hillside: see why your garden may differ.

Arizona: freeze (32 °F) dates by NOAA station, 1991–2020 normals
Station	Elevation	Last frost	Safer	First frost	Safer	Season (days)
Aguila	2,165 ft	Mar 17	Apr 12	Nov 19	Nov 5	243
Ajo	1,751 ft	Jan 10	Feb 15	Dec 21	Nov 25	347
Alamo Dam	1,290 ft	Mar 4	Mar 31	Nov 23	Nov 10	261
Alpine	8,050 ft	Jun 15	Jun 30	Sep 21	Sep 7	96
Anvil Rch	2,759 ft	Mar 27	Apr 18	Nov 9	Oct 25	226
Apache Junction 5 Ne	2,070 ft	Feb 11	Mar 7	Dec 10	Nov 19	304
Arizona City	1,525 ft	Feb 28	Mar 14	Nov 21	Nov 5	266
Bagdad	3,935 ft	Apr 7	May 3	Nov 12	Oct 26	217
Beaver Dam	1,931 ft	Mar 7	Apr 10	Nov 19	Nov 1	251
Bellemont Wfo	7,152 ft	Jun 21	Jul 4	Sep 17	Sep 3	85
Benson 6se	3,690 ft	Apr 12	Apr 29	Nov 1	Oct 18	202
Betatakin	7,286 ft	May 7	May 26	Oct 15	Sep 30	159
Bisbee 1wnw	5,560 ft	Apr 1	Apr 20	Nov 10	Oct 25	222
Black Rvr Pumps	6,065 ft	May 16	Jun 2	Oct 13	Sep 30	149
Blue Ridge Rs	6,880 ft	May 31	Jun 12	Oct 2	Sep 22	126
Bouse	925 ft	Feb 18	Mar 12	Nov 28	Nov 12	284
Bowie	3,777 ft	Apr 1	Apr 18	Nov 6	Oct 21	217
Bright Angel Rs	8,000 ft	Jun 3	Jun 19	Sep 27	Sep 12	113
Bullhead City	531 ft	Jan 4	Feb 5	Dec 23	Dec 1	356
Canelo 1 Nw	5,010 ft	Apr 23	May 7	Oct 30	Oct 17	188
Canyon De Chelly	5,610 ft	May 6	May 31	Oct 8	Sep 26	153
Carefree	2,530 ft	Feb 4	Mar 9	Dec 16	Nov 24	313
Casa Grande Nm	1,419 ft	Feb 17	Mar 8	Nov 29	Nov 12	284
Casa Grande	1,400 ft	Feb 5	Feb 28	Dec 6	Nov 18	305
Cascabel	3,194 ft	Apr 24	May 9	Oct 31	Oct 14	187
Castle Hot Springs	1,990 ft	Jan 15	Feb 21	Dec 22	Nov 29	341
Catalina Sp	2,707 ft	Apr 2	Apr 18	Nov 11	Oct 26	222
Chandler Heights	1,425 ft	Feb 1	Feb 27	Dec 11	Nov 23	315
Childs	2,650 ft	Apr 2	Apr 20	Nov 11	Oct 27	223
Chino Valley	4,750 ft	Apr 27	May 18	Oct 24	Oct 9	178
Chiricahua Nm	5,300 ft	Apr 16	Apr 30	Nov 8	Oct 21	203
Clifton	3,520 ft	Feb 26	Mar 15	Nov 23	Nov 10	268
Colorado City	5,001 ft	Apr 26	May 15	Oct 25	Oct 11	180
Cordes	3,771 ft	Apr 5	Apr 24	Nov 17	Oct 28	221
Coronado Nmem	5,242 ft	Apr 7	Apr 27	Nov 9	Oct 25	213
Dateland Whitewing Rch	520 ft	Jan 25	Feb 25	Dec 13	Nov 29	324
Diamond M Rch	5,492 ft	May 17	Jun 4	Oct 10	Sep 28	146
Douglas Bisbee Inl Ap	4,105 ft	Apr 11	Apr 27	Nov 2	Oct 21	203
Douglas	4,040 ft	Mar 18	Apr 12	Nov 13	Oct 27	235
Duncan	3,660 ft	Apr 24	May 8	Oct 25	Oct 11	183
E Mesa	1,518 ft	Feb 1	Feb 28	Dec 10	Nov 22	312
Ehrenberg 2 E	465 ft	Jan 4	Feb 10	Dec 19	Dec 5	347
Elgin 5 S	4,811 ft	Apr 18	May 3	Nov 1	Oct 18	195
Eloy 4 Ne	1,545 ft	Feb 24	Mar 18	Nov 28	Nov 11	273
Flagstaff 4 Sw	7,125 ft	Jun 23	Jul 7	Sep 15	Aug 31	81
Flagstaff Pulliam Ap	7,003 ft	Jun 4	Jun 19	Sep 28	Sep 16	115
Florence	1,400 ft	Jan 30	Feb 24	Dec 12	Nov 22	319
Fountain Hills	1,580 ft	Jan 6	Feb 11	Dec 28	Dec 4	356
Ft Huachuca Pioneer Airfield	4,768 ft	Mar 16	Apr 12	Nov 21	Nov 3	246
Ft Thomas 2 Sw	2,835 ft	Apr 1	Apr 18	Nov 6	Oct 21	217
Ft Valley	7,347 ft	Jun 11	Jun 30	Sep 25	Sep 8	99
Ganado	6,340 ft	May 15	Jun 1	Oct 10	Sep 28	147
Gila Bend 2se	794 ft	Jan 23	Feb 19	Dec 11	Nov 24	323
Globe #3	3,660 ft	Mar 11	Mar 29	Nov 21	Nov 6	253
Grand Canyon E Entrance	7,480 ft	May 10	May 24	Oct 20	Oct 7	165
Grand Canyon Np 2	6,785 ft	Jun 1	Jun 17	Oct 3	Sep 22	123
Grand Canyon Np Ap	6,606 ft	Jun 17	Jul 1	Sep 24	Sep 12	97
Grand Canyon Visitor Ctr	7,083 ft	May 2	May 18	Oct 27	Oct 11	177
Green Valley	2,900 ft	Feb 25	Mar 18	Nov 27	Nov 12	276
Greer	8,275 ft	Jun 5	Jun 20	Sep 29	Sep 15	113
Happy Jack Rs	7,480 ft	Jun 1	Jun 13	Oct 3	Sep 22	124
Heber (Black Mesa) Rs	6,590 ft	May 23	Jun 6	Oct 5	Sep 24	135
Holbrook	5,085 ft	Apr 22	May 7	Oct 24	Oct 12	184
Jerome	4,950 ft	Mar 26	Apr 19	Nov 25	Nov 4	242
Kartchner Caverns	4,690 ft	Mar 20	Apr 11	Nov 15	Nov 1	237
Keams Canyon	6,205 ft	May 16	Jun 5	Oct 10	Sep 29	147
Kingman Mohave Co Ap	3,420 ft	Apr 2	Apr 21	Nov 11	Oct 26	220
Kitt Peak	6,790 ft	Apr 26	May 17	Nov 4	Oct 18	195
Kofa Mine	1,775 ft	Jan 11	Feb 16	Jan 9	Dec 14	365
Lake Havasu City	449 ft	Jan 5	Feb 3	Dec 29	Dec 9	365
Laveen 3 Sse	1,135 ft	Jan 14	Feb 12	Dec 22	Dec 1	343
Lees Ferry	3,210 ft	Mar 5	Mar 26	Nov 19	Nov 4	257
Litchfield Park	1,040 ft	Jan 7	Feb 5	Dec 24	Dec 6	351
Lukachukai	6,520 ft	May 3	May 22	Oct 17	Oct 2	163
Maricopa 4 N	1,160 ft	Feb 23	Mar 15	Nov 24	Nov 10	274
Mc Nary 2n	7,340 ft	May 20	Jun 4	Oct 11	Sep 29	142
Mc Neal	4,170 ft	Apr 6	Apr 24	Nov 10	Oct 25	215
Meadview 1w	2,938 ft	Mar 5	Mar 28	Nov 28	Nov 14	265
Meteor Crater	5,535 ft	Apr 30	May 26	Oct 23	Oct 1	174
Miami	3,560 ft	Feb 24	Mar 18	Dec 1	Nov 15	279
Montezuma Castle Nm	3,180 ft	Apr 16	May 2	Oct 30	Oct 15	196
Monument Valley	5,501 ft	Apr 10	Apr 30	Nov 1	Oct 17	205
Mormon Flat	1,705 ft	Jan 29	Feb 23	Dec 24	Dec 3	334
Mt Lemmon Willow Canyon	7,027 ft	Apr 1	Apr 21	Nov 19	Oct 30	229
Mund'S Park	6,470 ft	Jun 10	Jun 27	Sep 27	Sep 14	106
Natural Brg	4,608 ft	Apr 9	May 10	Nov 10	Oct 21	211
Nogales 6 N	3,461 ft	Apr 16	May 4	Nov 2	Oct 19	199
Nogales Intl Ap	3,932 ft	Mar 20	Apr 13	Nov 17	Oct 30	239
Oak Creek Canyon	5,118 ft	Apr 14	May 4	Nov 5	Oct 18	204
Oracle 2 Se	4,510 ft	Mar 23	Apr 16	Nov 22	Nov 2	242
Oracle Sp	4,595 ft	Mar 29	Apr 29	Nov 13	Oct 26	225
Organ Pipe Cactus Nm	1,678 ft	Feb 4	Mar 3	Dec 15	Nov 26	314
Page Muni Ap	4,310 ft	Mar 7	Mar 31	Nov 15	Nov 2	250
Page	4,270 ft	Mar 27	Apr 16	Nov 9	Oct 26	226
Painted Desert Np	5,760 ft	May 1	May 16	Oct 20	Oct 6	169
Painted Rock Dam	568 ft	Jan 21	Feb 18	Dec 15	Nov 27	327
Paradise	5,460 ft	Apr 21	May 8	Oct 27	Oct 16	188
Parker	420 ft	Jan 12	Feb 15	Dec 19	Dec 4	338
Payson	4,850 ft	Apr 29	May 20	Oct 24	Oct 11	176
Pearce - Sunsites	4,350 ft	Apr 14	Apr 30	Nov 2	Oct 20	200
Petrified Forest Np	5,446 ft	May 4	May 21	Oct 16	Oct 3	162
Phantom Rch	2,530 ft	Feb 9	Mar 4	Dec 5	Nov 21	295
Phoenix Deer Valley Muni Ap	1,455 ft	Jan 8	Feb 12	Dec 25	Dec 5	354
Phoenix Sky Harbor Intl Ap	1,107 ft	Jan 5	Jan 22	Jan 3	Dec 18	365
Picacho 8 Se	1,981 ft	Feb 6	Mar 5	Dec 9	Nov 22	308
Pinetop 2e	7,200 ft	May 22	Jun 4	Oct 6	Sep 24	138
Pinnacle Peak	2,565 ft	Jan 27	Mar 5	Dec 21	Nov 28	330
Pipe Spring Nm	4,920 ft	May 1	May 18	Oct 19	Oct 5	168
Pleasant Valley	5,183 ft	May 6	May 28	Oct 20	Oct 6	165
Portal 4 Sw	5,390 ft	May 3	May 16	Oct 25	Oct 11	174
Prescott Love Fld	5,042 ft	Apr 20	May 7	Oct 27	Oct 13	188
Prescott	5,205 ft	Apr 30	May 15	Oct 20	Oct 7	172
Punkin Ctr	2,325 ft	Mar 7	Mar 27	Nov 20	Nov 3	255
Quartzsite	875 ft	Jan 28	Feb 24	Dec 6	Nov 22	315
Robson Rch	1,495 ft	Feb 7	Mar 4	Dec 3	Nov 17	298
Roosevelt 1 S	2,605 ft	Jan 17	Feb 18	Dec 25	Dec 5	342
Safford Ag Ctr	2,954 ft	Mar 25	Apr 14	Nov 9	Oct 23	228
Safford Muni Ap	3,176 ft	Mar 8	Mar 27	Nov 20	Nov 4	254
Saguaro Np	3,080 ft	Jan 26	Feb 25	Dec 16	Nov 26	326
Saint Johns	5,790 ft	May 2	May 17	Oct 14	Oct 3	164
San Carlos Reservoir	2,532 ft	Mar 13	Apr 6	Nov 19	Nov 3	247
San Manuel	3,420 ft	Feb 4	Mar 2	Dec 8	Nov 20	306
San Simon	3,580 ft	Apr 16	May 4	Nov 2	Oct 17	198
Sanders	5,853 ft	May 22	Jun 10	Oct 8	Sep 25	138
Santa Rita Exp Range	4,300 ft	Feb 25	Mar 29	Dec 5	Nov 16	282
Sasabe	3,590 ft	Mar 21	Apr 14	Nov 20	Nov 1	246
Scottsdale Muni Ap	1,473 ft	Jan 6	Feb 7	Dec 26	Dec 4	353
Sedona	4,220 ft	Apr 1	Apr 19	Nov 17	Oct 28	229
Seligman	5,250 ft	May 10	May 29	Oct 15	Oct 1	154
Show Low Ap	6,411 ft	May 5	May 20	Oct 15	Oct 2	162
Sierra Vista	4,606 ft	Apr 5	Apr 21	Nov 9	Oct 23	216
Snowflake	5,642 ft	May 11	May 31	Oct 10	Sep 28	149
Sonoita	4,895 ft	Mar 28	Apr 21	Nov 21	Nov 5	237
South Phoenix	1,155 ft	Jan 21	Feb 20	Dec 16	Nov 29	331
Springerville	6,998 ft	Jun 1	Jun 20	Sep 26	Sep 12	114
St Johns Industrial Ap	5,733 ft	May 3	May 19	Oct 10	Sep 30	160
Stewart Mtn Dam	1,422 ft	Feb 13	Mar 8	Dec 5	Nov 18	295
Sunrise Mtn	9,370 ft	Jun 18	Jun 30	Sep 18	Sep 4	91
Sunset Crater Nm	6,980 ft	Jun 16	Jun 29	Sep 19	Aug 31	94
Superior	2,860 ft	Jan 18	Mar 1	Dec 28	Dec 1	342
Tacna 3 Ne	324 ft	Feb 13	Mar 5	Dec 1	Nov 14	288
Teec Nos Pos	5,290 ft	Apr 11	May 2	Nov 1	Oct 16	200
Tempe Asu	1,167 ft	Feb 13	Mar 9	Dec 5	Nov 18	298
Temple Bar	1,280 ft	Feb 4	Feb 25	Dec 10	Nov 27	309
Tohono Chul	2,527 ft	Feb 26	Mar 18	Dec 4	Nov 17	279
Tombstone	4,659 ft	Mar 4	Mar 31	Nov 29	Nov 12	264
Tuba City	4,988 ft	Apr 16	May 4	Oct 28	Oct 13	193
Tucson 11 W	2,733 ft	Feb 8	Mar 8	Dec 10	Nov 22	303
Tucson 17 Nw	2,561 ft	Feb 23	Mar 22	Dec 6	Nov 18	287
Tucson Camp Ave Exp	2,330 ft	Feb 20	Mar 11	Nov 27	Nov 10	280
Tucson Intl Ap	2,549 ft	Feb 5	Mar 2	Dec 9	Nov 21	307
Tucson U Of A #1	2,315 ft	Feb 11	Mar 7	Dec 2	Nov 16	293
Tucson Wfo	2,435 ft	Jan 20	Feb 18	Dec 17	Nov 28	332
Tumacacori Nm	3,267 ft	Apr 5	Apr 25	Nov 10	Oct 21	217
Tuzigoot	3,470 ft	Mar 30	Apr 21	Nov 10	Oct 25	223
Twin Arrows	5,815 ft	Apr 14	May 4	Oct 25	Oct 11	192
Walnut Canyon Nm	6,695 ft	May 13	May 30	Oct 6	Sep 26	145
Walnut Creek	5,090 ft	May 24	Jun 11	Oct 7	Sep 27	135
Wickenburg	2,095 ft	Mar 7	Apr 8	Nov 20	Nov 4	254
Wikieup	2,010 ft	Mar 19	Apr 22	Nov 23	Nov 4	246
Willcox	4,170 ft	Apr 9	Apr 29	Oct 31	Oct 20	204
Williams 35 Nnw	5,990 ft	May 9	May 27	Oct 19	Oct 3	161
Williams	6,909 ft	May 22	Jun 10	Oct 5	Sep 24	135
Willow Beach	740 ft	Jan 7	Feb 1	Dec 29	Dec 10	358
Window Rock Ap	6,739 ft	May 29	Jun 10	Sep 28	Sep 16	121
Winslow Muni Ap	4,886 ft	Apr 27	May 14	Oct 18	Oct 5	174
Wittmann 1se	1,683 ft	Feb 5	Mar 3	Dec 11	Nov 20	306
Wupatki Nm	4,908 ft	Apr 7	Apr 30	Nov 3	Oct 19	206
Youngtown	1,135 ft	Jan 20	Feb 18	Dec 15	Nov 28	331
Yucca 1 Nne	1,950 ft	Feb 18	Mar 16	Dec 2	Nov 16	288
Yuma 27 Ene	620 ft	Jan 11	Feb 14	Dec 21	Dec 1	347
Yuma Mcas	213 ft	Frost-free: too few freezes for a date
Yuma Proving Ground	324 ft	Jan 4	Feb 9	Dec 25	Dec 3	361
Yuma Quartermaster Depot	160 ft	Jan 8	Feb 19	Dec 28	Dec 11	362

Plan your garden with these dates

Enter your ZIP code in the planner: it picks the nearest of these stations and dates every crop in your beds from its frosts. Free, in your browser.

Open the garden planner Planting calendar

Questions

When is the last frost in Arizona?

It depends on where you are. The typical last spring frost at Arizona's NOAA stations ranges from January 4 to June 23, and half of them have had it by March 30. Enter your ZIP code above for the station nearest you.

When is the first frost in Arizona?

Typically between September 15 and January 9, depending on the station; the median is November 12. Plan fall crops back from your own station's date.

What do "typical" and "safer" mean?

With the typical (50%) last-frost date, half of years still have a frost after it. With the safer (10%) date, only one year in ten does. In fall it's the other way around: the safer date is the earlier one.

Sources

NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020 (annual/seasonal, by station: freeze dates at 32 °F)

Arizona Frost Dates

Every station in Arizona

Plan your garden with these dates

Questions

Other states

Sources