Frost Dates for Pirtleville, AZ

Based on data from Douglas weather station, 2 miles away

Elevation: 3970 ft

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. March 18
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. November 13

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 March 31
First Fall Frost November 5

Hard Freeze (28°F)

Last Spring Hard Freeze February 27
First Fall Hard Freeze November 25
31.36°N, 109.56°W © OpenStreetMap

Growing Season

240 Days March 18 to November 13

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.
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

Avg High Avg Temp Avg Low Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January65°48°31°
February69°52°35°
March73°56°40°
April81°63°45°
May89°71°53°
June97°79°62°
July95°81°66°
August93°79°65°
September90°75°60°
October83°66°49°
November74°56°38°
December65°48°30°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.5
February1.9
March1.1
April0.0
May0.0
June1.2
July3.0
August3.3
September2.9
October1.6
November1.6
December3.1

Sunrise / Sunset

Daylight Mountain Standard Time (MST) Longest: 14h 03m · Shortest: 9h 57m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Standard Time (MST))
Month Sunrise Sunset Daylight
January7:22 AM5:33 PM10h 10m
February7:06 AM5:60 PM10h 54m
March6:35 AM6:21 PM11h 46m
April5:55 AM6:42 PM12h 46m
May5:27 AM7:02 PM13h 36m
June5:17 AM7:19 PM14h 02m
July5:28 AM7:19 PM13h 51m
August5:48 AM6:57 PM13h 09m
September6:07 AM6:18 PM12h 11m
October6:27 AM5:40 PM11h 13m
November6:52 AM5:14 PM10h 22m
December7:15 AM5:13 PM9h 58m

Nearby Stations

Douglas Bisbee Inl AP, AZ April 11 - November 2 Mc Neal, AZApril 6 - November 10 Bisbee 1wnw, AZ April 1 - November 10 Tombstone, AZ March 4 - November 29 Portal 4 Sw, AZMay 3 - October 25 Coronado Nmem, AZ April 7 - November 9

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