Kirby, TX Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Kirby, a city in Bexar County, Texas.

This Afternoon

77°F

Sunny

Sunny, with a high near 77. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

7-day forecast for Kirby

When	Temp	Forecast	Wind	Precip
This Afternoon	77°F	Sunny	5 to 10 mph NNW	2%
Tonight	53°F	Mostly Clear	5 mph N	0%
Wednesday	75°F	Sunny	0 to 5 mph NE	0%
Wednesday Night	53°F	Mostly Clear	0 to 5 mph ESE	0%
Thursday	79°F	Mostly Sunny	0 to 5 mph SE	2%
Thursday Night	59°F	Partly Cloudy	0 to 20 mph N	4%
Friday	74°F	Sunny	10 to 15 mph N	0%
Friday Night	54°F	Partly Cloudy	5 to 15 mph NNE	3%
Saturday	69°F	Slight Chance Rain Showers	10 to 15 mph NNE	19%
Saturday Night	52°F	Mostly Cloudy	5 to 15 mph NNE	12%
Sunday	70°F	Mostly Sunny	5 to 10 mph NNE	11%
Sunday Night	50°F	Mostly Clear	0 to 5 mph N	5%
Monday	70°F	Sunny	5 mph ENE	4%
Monday Night	50°F	Partly Cloudy	0 to 5 mph E	2%

Forecast source: National Weather Service (api.weather.gov) for Kirby (29.462, -98.385). Updated through the day.

Growing snapshot for Kirby

Last spring frost

Feb 25

First fall frost

Nov 28

Growing season

277 days

Hardiness zone

More local growing data for Kirby: nearby ZIP 78219 weather · frost dates · planting calendar · Texas frost dates

Nearby towns & communities

Alamo Heights Balcones Heights Castle Hills China Grove Converse Cross Mountain Elmendorf Grey Forest Helotes Hill Country Village Hollywood Park Lackland AFB Leon Valley Live Oak Macdona Olmos Park Randolph AFB San Antonio Sandy Oaks Schertz Selma Shavano Park Somerset St. Hedwig Terrell Hills Timberwood Park Universal City Von Ormy Windcrest

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Climate data from the nearest NOAA station, San Antonio Incarnate Word, Tx (5.7 mi from Kirby). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.