Frost Dates for Flowing Wells, AZ

Based on data from Tucson U Of A #1 weather station, 2 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. February 11
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 2
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 22
First Fall Frost November 26

Hard Freeze (28°F)

Last Spring Hard Freeze January 18
First Fall Hard Freeze December 15
32.29°N, -111.01°W © OpenStreetMap

Growing Season

295 Days February 11 to December 2

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.

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

30° 50° 70° 90° 110°
53°
High: 67°F
Avg: 53°F
Low: 39°F
Jan
56°
High: 71°F
Avg: 56°F
Low: 42°F
Feb
62°
High: 77°F
Avg: 62°F
Low: 46°F
Mar
68°
High: 84°F
Avg: 68°F
Low: 51°F
Apr
76°
High: 93°F
Avg: 76°F
Low: 60°F
May
85°
High: 102°F
Avg: 85°F
Low: 69°F
Jun
88°
High: 101°F
Avg: 88°F
Low: 75°F
Jul
87°
High: 100°F
Avg: 87°F
Low: 74°F
Aug
83°
High: 96°F
Avg: 83°F
Low: 69°F
Sep
72°
High: 87°F
Avg: 72°F
Low: 57°F
Oct
61°
High: 76°F
Avg: 61°F
Low: 45°F
Nov
53°
High: 67°F
Avg: 53°F
Low: 39°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 4.3"
3.1"
3.10"
Jan
3.1"
3.09"
Feb
3.7"
3.72"
Mar
0.0"
0.00"
Apr
0.0"
0.00"
May
0.8"
0.76"
Jun
3.3"
3.30"
Jul
4.3"
4.28"
Aug
4.1"
4.09"
Sep
0.0"
0.00"
Oct
2.2"
2.18"
Nov
3.6"
3.60"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h13.5h14h14h13h12h11h10.5h10h
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: 6:25 AM – 5:35 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 Wfo, AZ January 20 - December 17 Tucson Camp Ave Exp, AZ February 20 - November 27 Tohono Chul, AZ February 26 - December 4 Tucson Intl AP, AZ February 5 - December 9 Tucson 11 W, AZ February 8 - December 10 Tucson 17 Nw, AZ February 23 - December 6

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