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Lackland AFB Weather: What To Expect When Moving Here
Lackland AFB Weather: What To Expect When Moving HereLackland AFB Weather: What To Expect When Moving Here

Lackland AFB Weather: What To Expect When Moving Here


Congratulations and welcome to the great state of Texas. Everything’s bigger here, including the temperatures, the humidity, and the number of electrolytes you’ll need to consume. There’s a lot to like about your new PCS, and a lot to learn as well. For instance, Lackland AFB is an enclave inside San Antonio, in Bexar County. The base is a part of Joint Base San Antonio, and is home to Air Force Basic Training. Here, you’ll need to be equipped for the weather conditions you’ll come to expect, and this brief guide will show you how.

Suggested Read: Lackland Air Force Base: In-Depth Welcome Center

Seasonal Temperatures

The highs are very high, and it’s not unusual for it to reach into the low hundreds during the summer. The averages range from the mid forties to just over a hundred degrees Fahrenheit, year round. For the most part, it’s going to be very hot in Lackland, with the short winters and occasional cloud coverage offering some mild relief from the Texas sun.

 Lackland AFB Weather in the Spring


High temps: High 80s
Low temps: 50s

Springtime at Lackland can be a great time to be outside. It’s a comfortable 50-80 degree average, with a fifty-fifty chance of cloud coverage to block out the worst of the sun, and a low chance of rainfall. The spring season at Lackland sees an average of two inches of rain. Mornings at this time of year range from cool to comfortable, with the evenings settling in a bit hotter. These are perfect times to be out and about. Afternoons can reach into the eighties. In spring, you’ll be looking at about twelve hours of daylight, with a sunrise around 8am. Humidity is low until summer, so take advantage now and get outside to explore the sights of San Antonio and any on-base recreation options.

Lackland AFB Weather in the Summer


High temps: Low 100s
Low temps: Mid 70s

Look out, Airman. You’re going to want to be prepared for the nonstop waves of assaults nature has in store for you during the summer months at Lackland. Here you’ll find the daily temperatures at a constant range of mid-seventies through the low hundreds. There’s a brief reprieve in the morning, where you’ll wake up inside of an oven instead of a nuclear reactor, with temperatures around the mid-seventies. The rest of the day is hot, hot, hot, and only cools off very late at night. Cloud coverage in the summer is maybe twenty percent less likely than it is in spring. Because of the proximity to the equator and the clear skies, the Ultraviolet (UV) Index ranges from very high to extreme. You’re going to need plenty of sunscreen. Extreme UV rays require extreme precautionary measures. Note that constant UV exposure increases your risk of skin cancers, including melanoma, which kills just under seven thousand people every year. The summer humidity can be oppressive, though there’s a decent chance of rain now. Daylight during the day can reach up to seventeen hours, so you’ll have plenty of time to watch all of the empty Gatorade bottles collecting on the barracks floor.

Lackland AFB Weather in the Fall


High temps: Low 80s
Low temps: 60s

You might be thinking that the fall will arrive to save you, but you would be mistaken. While temperatures do drop into the sixties and seventies for longer during the day, the humidity is still going to be high until October. The hottest period of the day shortens a few hours and lasts through the evening, with October also seeing the last of the truly intense heat in the afternoons. Cloud coverage increases at the end of summer and lessens a bit during the fall. The UV Index remains high, so without cloud coverage you’re still going to want to slather on the sunscreen. The chance of precipitation is higher now than in the summer, but still lower than it was during the spring, settling in at around 22% during October. The days begin to shorten again and sunrise creeps up from 6:30am to 8am.


High temps: Mid 60s
Low temps: 40s

The only semi-comfortable season in San Antonio, winter at Lackland is sweatshirt weather, with temperatures averaging from the forties to the sixties. There’s a possibility that it might even get cold in the morning! Make sure to bring at least one cold-weather outfit to ward off the occasional frosty morning, but don’t expect to need to don the heavy layers very often. You won’t need any wool socks or long johns. You won’t be trudging through the snow, or even see a single snowflake during your stay in San Antonio, so don’t worry about bringing winter boots. Regular tennis shoes or running shoes will do just fine here during the winter. Or possibly even socks with flip flops if you’re feeling stylishly adventurous.

Field & Training Expectations

Field & Training Expectations

Keep in mind this simple expectation; it’s going to be hot practically all year round. The sun is going to beat down, and the humidity is going to kick you in the camo. You’re going to need plenty of water and sunscreen for any daily activities. When it comes to basic training, the initial fitness test is going to be a wake up call in the heat for new Airmen, and anyone coming from outside such a hot climate should prepare for having less productive workout results than usual. The time on your runs will probably climb. By the time your squadron gets to FEST and BEAST training though, you should hopefully be through the worst of it and coping better with the climate. Make sure to have plenty of replacement socks and plenty of talcum powder.


South Central Texas is hot. It’s muggy. It doesn’t get a lot of rain and there are never enough clouds to block out the sweltering rays of the sun. Winter is going to be the most comfortable month you’re going to see and might even get a bit chilly, if you’re lucky. Prepare for the sun and keep hydrated, and you’ll make it through just fine.


The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

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