Frost Dates for Vail, AZ

Based on data from Saguaro Np weather station, 9 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. January 26
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. December 16
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost February 6
First Fall Frost December 8

Hard Freeze (28°F)

Last Spring Hard Freeze January 7
First Fall Hard Freeze December 28
32.05°N, -110.71°W © OpenStreetMap

Growing Season

325 Days January 26 to December 16

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 9a

Avg. annual minimum: 20 to 25°F (−7 to −4°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

BSh Hot Semi-Arid (Steppe)

Hot with low but not negligible rainfall. Less extreme than true desert. Dryland farming techniques and drought-tolerant varieties work well. Mulching and water conservation are key.

Köppen climate map

Temperature

40° 60° 80° 100°
53°
High: 65°F
Avg: 53°F
Low: 41°F
Jan
56°
High: 68°F
Avg: 56°F
Low: 43°F
Feb
61°
High: 74°F
Avg: 61°F
Low: 48°F
Mar
68°
High: 82°F
Avg: 68°F
Low: 54°F
Apr
77°
High: 91°F
Avg: 77°F
Low: 62°F
May
86°
High: 101°F
Avg: 86°F
Low: 72°F
Jun
87°
High: 100°F
Avg: 87°F
Low: 74°F
Jul
85°
High: 98°F
Avg: 85°F
Low: 73°F
Aug
81°
High: 94°F
Avg: 81°F
Low: 69°F
Sep
72°
High: 86°F
Avg: 72°F
Low: 59°F
Oct
62°
High: 75°F
Avg: 62°F
Low: 49°F
Nov
53°
High: 65°F
Avg: 53°F
Low: 41°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 2" 4" 4.1"
2.8"
2.79"
Jan
3.4"
3.43"
Feb
4.1"
4.08"
Mar
0.0"
0.00"
Apr
0.0"
0.00"
May
0.7"
0.72"
Jun
2.9"
2.88"
Jul
3.8"
3.78"
Aug
3.7"
3.71"
Sep
0.0"
0.00"
Oct
0.0"
0.00"
Nov
2.8"
2.81"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h13.5h14h14h13h12h11h10.5h10h
Jan: 6:57 AM – 5:03 PM · 10h 07m
Feb: 6:34 AM – 5:26 PM · 10h 52m
Mar: 6:07 AM – 5:53 PM · 11h 46m
Apr: 5:36 AM – 6:24 PM · 12h 48m
May: 5:11 AM – 6:49 PM · 13h 39m
Jun: 4:57 AM – 7:03 PM · 14h 06m
Jul: 5:03 AM – 6:57 PM · 13h 55m
Aug: 5:24 AM – 6:36 PM · 13h 11m
Sep: 5:54 AM – 6:06 PM · 12h 11m
Oct: 6:24 AM – 5:36 PM · 11h 11m
Nov: 6:50 AM – 5:10 PM · 10h 19m
Dec: 7:03 AM – 4:57 PM · 9h 54m
Daylight Longest: 14h 07m · Shortest: 9h 53m

Nearby Stations

Tucson Wfo, AZ January 20 - December 17 Tucson Intl AP, AZ February 5 - December 9 Tucson Camp Ave Exp, AZ February 20 - November 27 Mt Lemmon Willow Canyon, AZ April 1 - November 19 Tucson U Of A #1, AZ February 11 - December 2 Tohono Chul, AZ February 26 - December 4

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