Frost Dates for Portal 4 Sw, AZ

Elevation: 1643 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 3
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 25

30% Probability

Only 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 May 8
First Fall Frost October 19

Hard Freeze (28°F)

Last Spring Hard Freeze April 16
First Fall Hard Freeze November 4
31.88°N, 109.21°W © OpenStreetMap

Growing Season

175 Days May 3 to October 25

USDA Hardiness Zone

Hardiness 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 7b

Avg. annual minimum: 5 to 10°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January56°41°25°
February60°44°28°
March66°49°32°
April73°55°37°
May81°62°43°
June89°71°52°
July88°73°58°
August85°71°57°
September81°66°51°
October75°58°41°
November64°48°32°
December55°41°26°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January4.5
February4.2
March4.4
April0.0
May0.0
June2.5
July5.5
August5.4
September4.8
October4.2
November4.5
December4.8

Sunrise / Sunset

Daylight Longest: 14h 05m · Shortest: 9h 55m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January6:56 AM5:04 PM10h 08m
February6:34 AM5:26 PM10h 52m
March6:07 AM5:53 PM11h 46m
April5:36 AM6:24 PM12h 47m
May5:11 AM6:49 PM13h 38m
June4:58 AM7:02 PM14h 04m
July5:03 AM6:57 PM13h 54m
August5:25 AM6:35 PM13h 10m
September5:54 AM6:06 PM12h 11m
October6:24 AM5:36 PM11h 12m
November6:50 AM5:10 PM10h 20m
December7:02 AM4:58 PM9h 55m

Nearby Stations

Paradise, AZApril 21 - October 27 Chiricahua Nm, AZ April 16 - November 8 Animas 3ese, NM April 2 - November 7 San Simon, AZ April 16 - November 2 Mc Neal, AZApril 6 - November 10 Bowie, AZApril 1 - November 6

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview