Frost Dates for Lackland Air Force Base, TX

Based on data from San Antonio Kelly Afb weather station, 2 miles away

Elevation: 748 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. February 22
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. December 2

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 2
First Fall Frost November 25

Hard Freeze (28°F)

Last Spring Hard Freeze February 1
First Fall Hard Freeze December 16
29.39°N, 98.62°W © OpenStreetMap

Growing Season

284 Days February 22 to December 2

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 9a

Avg. annual minimum: 20 to 25°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January64°53°41°
February70°57°44°
March75°64°52°
April82°70°59°
May89°78°66°
June93°82°72°
July96°85°74°
August97°86°74°
September92°81°70°
October84°72°60°
November72°60°49°
December65°53°41°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.4
February1.8
March3.0
April4.3
May4.4
June5.2
July5.8
August5.0
September5.3
October5.2
November2.9
December2.3

Sunrise / Sunset

Daylight Central Time (CT) Longest: 13h 53m · Shortest: 10h 07m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:34 AM5:53 PM10h 19m
February7:19 AM6:18 PM10h 59m
March7:50 AM7:38 PM11h 47m
April7:13 AM7:56 PM12h 43m
May6:46 AM8:15 PM13h 28m
June6:38 AM8:31 PM13h 52m
July6:49 AM8:31 PM13h 43m
August7:07 AM8:10 PM13h 04m
September7:24 AM7:34 PM12h 10m
October7:41 AM6:58 PM11h 16m
November7:05 AM5:34 PM10h 30m
December7:26 AM5:34 PM10h 08m

Nearby Stations

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