Frost Dates for Tucson Wfo, AZ

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 20
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 17
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 2
First Fall Frost December 9

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze January 4
First Fall Hard Freeze December 30
32.23°N, -110.95°W © OpenStreetMap

Growing Season

332 Days January 20 to December 17

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 10a

Learn more

Temperature

40° 60° 80° 100°
54°
High: 66°
Avg: 54°
Low: 42°
Jan
57°
High: 69°
Avg: 57°
Low: 45°
Feb
63°
High: 76°
Avg: 63°
Low: 50°
Mar
69°
High: 83°
Avg: 69°
Low: 56°
Apr
78°
High: 91°
Avg: 78°
Low: 64°
May
87°
High: 101°
Avg: 87°
Low: 73°
Jun
88°
High: 100°
Avg: 88°
Low: 77°
Jul
87°
High: 98°
Avg: 87°
Low: 76°
Aug
83°
High: 95°
Avg: 83°
Low: 72°
Sep
73°
High: 86°
Avg: 73°
Low: 60°
Oct
62°
High: 75°
Avg: 62°
Low: 50°
Nov
53°
High: 65°
Avg: 53°
Low: 42°
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

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h14h14h14h13h12h11h10h10h
Jan: 6:57 AM – 5:03 PM · 10h 06m
Feb: 6:34 AM – 5:26 PM · 10h 51m
Mar: 6:07 AM – 5:53 PM · 11h 46m
Apr: 5:36 AM – 6:24 PM · 12h 48m
May: 5:10 AM – 6:50 PM · 13h 39m
Jun: 4:57 AM – 7:03 PM · 14h 06m
Jul: 5:02 AM – 6:58 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: 6:51 AM – 5:09 PM · 10h 19m
Dec: 7:03 AM – 4:57 PM · 9h 54m
Daylight Longest: 14h 07m · Shortest: 9h 53m

Nearby Stations

Tucson U Of A #1, AZ February 11 - December 2 Tucson Camp Ave Exp, AZ February 20 - November 27 Tucson Intl AP, AZ February 5 - December 9 Tohono Chul, AZ February 26 - December 4 Tucson 11 W, AZ February 8 - December 10 Catalina Sp, AZ April 2 - November 11

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