Frost Dates for Kartchner Caverns, AZ

Elevation: 1430 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. March 20
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 15

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 9

Hard Freeze (28°F)

Last Spring Hard Freeze February 28
First Fall Hard Freeze November 28
31.84°N, 110.36°W © OpenStreetMap

Growing Season

240 Days March 20 to November 15

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 8a

Avg. annual minimum: 10 to 15°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

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
January60°46°33°
February62°49°35°
March69°55°40°
April75°60°45°
May84°68°52°
June94°77°61°
July91°78°65°
August89°76°64°
September86°72°59°
October79°64°50°
November68°54°39°
December59°46°34°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.2
February2.6
March0.7
April0.0
May0.0
June0.8
July3.7
August4.6
September4.1
October0.0
November1.2
December4.2

Sunrise / Sunset

Daylight Mountain Standard Time (MST) Longest: 14h 05m · Shortest: 9h 55m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Standard Time (MST))
Month Sunrise Sunset Daylight
January7:27 AM5:35 PM10h 08m
February7:10 AM6:02 PM10h 53m
March6:38 AM6:24 PM11h 46m
April5:58 AM6:45 PM12h 47m
May5:29 AM7:06 PM13h 38m
June5:20 AM7:24 PM14h 04m
July5:30 AM7:24 PM13h 53m
August5:51 AM7:01 PM13h 10m
September6:10 AM6:21 PM12h 11m
October6:31 AM5:42 PM11h 12m
November6:56 AM5:17 PM10h 20m
December7:19 AM5:15 PM9h 56m

Nearby Stations

Benson 6se, AZ April 12 - November 1 Ft Huachuca Pioneer Airfield, AZ March 16 - November 21 Tombstone, AZ March 4 - November 29 Elgin 5 S, AZ April 18 - November 1 Sonoita, AZMarch 28 - November 21 Sierra Vista, AZ April 5 - November 9

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