Frost Dates for Randolph Afb, TX

Elevation: 232 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. February 21
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 5

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 29

Hard Freeze (28°F)

Last Spring Hard Freeze January 26
First Fall Hard Freeze December 19
29.54°N, 98.27°W © OpenStreetMap

Growing Season

288 Days February 21 to December 5

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.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January63°52°41°
February68°57°45°
March73°62°51°
April80°69°58°
May87°76°66°
June92°82°71°
July96°85°73°
August96°85°73°
September90°79°68°
October84°72°59°
November72°61°49°
December64°53°42°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.6
February4.3
March5.8
April5.0
May9.1
June9.4
July7.5
August7.2
September9.2
October7.9
November5.2
December4.2

Sunrise / Sunset

Daylight Central Time (CT) Longest: 13h 54m · Shortest: 10h 06m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:33 AM5:51 PM10h 18m
February7:18 AM6:17 PM10h 58m
March7:49 AM7:36 PM11h 47m
April7:12 AM7:55 PM12h 43m
May6:45 AM8:14 PM13h 29m
June6:37 AM8:30 PM13h 53m
July6:47 AM8:30 PM13h 43m
August7:05 AM8:09 PM13h 04m
September7:23 AM7:33 PM12h 10m
October7:40 AM6:56 PM11h 16m
November7:04 AM5:33 PM10h 29m
December7:26 AM5:32 PM10h 07m

Nearby Stations

New Braunfels, TX March 8 - November 18 San Antonio Intl AP, TX February 26 - November 28 San Antonio Incarnate Word, TX February 25 - November 28 Austin San Antonio, TX March 1 - November 26 New Braunfels Wfo, TX February 25 - November 25 San Antonio Stinson AP, TX February 20 - December 3

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