Frost Dates for Summit, AZ

Based on data from Tucson Intl AP weather station, 4 miles away

Elevation: 2621 ft

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. February 5
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 9
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 17
First Fall Frost November 30

Hard Freeze (28°F)

Last Spring Hard Freeze January 11
First Fall Hard Freeze December 26
32.07°N, -110.95°W © OpenStreetMap

Growing Season

308 Days February 5 to December 9

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 9b

Avg. annual minimum: 25 to 30°F (−4 to −1°C)

Learn more

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

BWh Hot Desert

Very hot and extremely dry with minimal rainfall. Irrigation is essential for any gardening. Heat-tolerant crops and desert-adapted plants thrive; shade structures help in peak summer.

Köppen climate map

Temperature

40° 60° 80° 100°
54°
High: 67°F
Avg: 54°F
Low: 41°F
Jan
56°
High: 69°F
Avg: 56°F
Low: 43°F
Feb
62°
High: 76°F
Avg: 62°F
Low: 48°F
Mar
68°
High: 83°F
Avg: 68°F
Low: 53°F
Apr
77°
High: 92°F
Avg: 77°F
Low: 62°F
May
86°
High: 101°F
Avg: 86°F
Low: 71°F
Jun
88°
High: 100°F
Avg: 88°F
Low: 76°F
Jul
87°
High: 99°F
Avg: 87°F
Low: 75°F
Aug
83°
High: 95°F
Avg: 83°F
Low: 70°F
Sep
73°
High: 86°F
Avg: 73°F
Low: 59°F
Oct
62°
High: 75°F
Avg: 62°F
Low: 48°F
Nov
53°
High: 66°F
Avg: 53°F
Low: 41°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 1" 2" 3" 3.9"
3.1"
3.14"
Jan
3.5"
3.46"
Feb
2.5"
2.49"
Mar
0.0"
0.00"
Apr
0.0"
0.00"
May
0.8"
0.81"
Jun
3.4"
3.41"
Jul
3.1"
3.11"
Aug
2.9"
2.90"
Sep
0.3"
0.27"
Oct
0.4"
0.42"
Nov
3.9"
3.91"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h13.5h14h14h13h12h11h10.5h10h
Jan: 7:30 AM – 5:37 PM · 10h 07m
Feb: 7:13 AM – 6:04 PM · 10h 52m
Mar: 6:41 AM – 6:26 PM · 11h 46m
Apr: 6:00 AM – 6:48 PM · 12h 48m
May: 5:31 AM – 7:09 PM · 13h 39m
Jun: 5:21 AM – 7:27 PM · 14h 06m
Jul: 5:32 AM – 7:27 PM · 13h 55m
Aug: 5:53 AM – 7:03 PM · 13h 11m
Sep: 6:13 AM – 6:24 PM · 12h 11m
Oct: 6:33 AM – 5:45 PM · 11h 11m
Nov: 6:59 AM – 5:19 PM · 10h 19m
Dec: 7:23 AM – 5:17 PM · 9h 54m
Daylight Mountain Standard Time (MST) Longest: 14h 06m · Shortest: 9h 54m

Nearby Stations

Tucson Wfo, AZ January 20 - December 17 Tucson U Of A #1, AZ February 11 - December 2 Tucson Camp Ave Exp, AZ February 20 - November 27 Saguaro Np, AZ January 26 - December 16 Tohono Chul, AZ February 26 - December 4 Tucson 11 W, AZ February 8 - December 10

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