Lackland AFB, TX climate
Lackland AFB has warm winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 41°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Lackland AFB feels like
Winter
Spring
Summer
Fall
Lackland AFB weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 41° | 1.8" | 0 | 8 | 0 | 48° – 58° |
| February | 69° | 45° | 1.7" | 0 | 7 | 0 | 49° – 65° |
| March | 75° | 52° | 2.3" | 0 | 8 | 0 | 57° – 68° |
| April | 82° | 58° | 2.3" | 0 | 6 | 0 | 64° – 76° |
| May | 88° | 66° | 3.8" | 0 | 7 | 0 | 73° – 81° |
| June | 93° | 72° | 3.3" | 0 | 6 | 0 | 79° – 87° |
| July | 96° | 74° | 2.2" | 0 | 5 | 0 | 80° – 88° |
| August | 97° | 74° | 2.3" | 0 | 4 | 0 | 81° – 89° |
| September | 91° | 69° | 3.4" | 0 | 7 | 0 | 77° – 85° |
| October | 83° | 60° | 3.2" | 0 | 5 | 0 | 68° – 77° |
| November | 73° | 50° | 2.1" | 0 | 5 | 0 | 56° – 67° |
| December | 65° | 43° | 1.8" | 0 | 7 | 0 | 47° – 57° |
| Year | 81° | 58° | 30.2" | 0.0" | 76 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Lackland AFB
Lackland AFB gets 30 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 76 days a year.
About 284 frost-free days a year
In half of years the last 32° night comes by February 22 and the first one by December 2. That leaves about 284 frost-free days for gardens, longer than 94% of U.S. towns.
Heating and cooling a home in Lackland AFB
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Lackland AFB, 29% of that work is heating and 71% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Lackland AFB compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Lackland AFB averaged 1.0° warmer than the 1900s. The biggest change is in February (+1.9°). The shift is smaller than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Lackland AFB’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 49° to 65°. June is the most reliable, staying within 8°.
Common questions about Lackland AFB’s climate
What is the coldest month in Lackland AFB?
January, with a typical high of 65° and a low of 41°.
What is the hottest month in Lackland AFB?
August, with a typical high of 97° and a low of 74°. About 141 days a year reach 90°.
How much snow does Lackland AFB get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Lackland AFB?
In half of years the first 32° night comes by December 2, and the last spring frost by February 22.
What is the rainiest month in Lackland AFB?
May, with 3.8 inches of rain and melted snow. The year totals 30 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lackland AFB itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at San Antonio/seaworld, TX (7 mi, snow) and San Antonio Kelly Afb, TX (2 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.