Photo: US gov · Public domainLackland AFB reaches 100° on about 31 days a year, more than 98% of U.S. towns
Midwinter brings lows of about 41°. Winters are mild: January nights here are milder than in 90% of U.S. towns. The latest 30-year average runs 1.0° warmer than 1901–2000’s, with February up the most. Garden chairs stay out from October to April, the months with highs of 65–83°.
A year in Lackland AFB at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lackland AFB’s climate
Compared with towns across the U.S., with Lackland AFB’s place in Texas beside it.
What a year in Lackland AFB feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 284 frost-free days a year
In half of years the last 32° night comes by February 22 and the first by December 2. Frost and day counts come from NOAA’s station at San Antonio Kelly Afb, TX, 2.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lackland AFB’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 30 inches of rain a year
May is the wettest month and February the driest. Rain falls on about 76 days a year. Snow is rare: about 0.0" in a normal year at San Antonio/seaworld, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Lackland AFB
29% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at San Antonio Kelly Afb, TX.
Living with Lackland AFB’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
284 frost-free days in zone 9a. The last frost comes by Feb 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 2.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 7.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lackland AFB from natural hazards, river flooding is the largest share (38%); heat waves, cold waves, winter storms and ice storms together are 11%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lackland AFB and similar climates
TownRatings has no climate map of the towns around Lackland AFB yet.
Climates most like Lackland AFB’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Lackland AFB, TX | 41° | 96° | 30" | 0.0" |
| Chico, CA | 38° | 96° | 31" | 0.0" |
| Lawton, OK | 29° | 96° | 32" | 1.8" |
| Grants Pass, OR | 34° | 90° | 33" | 0.9" |
| Corona de Tucson, AZ | 36° | 96° | 14" | 0.1" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
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°).
A smaller shift than in 80% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Lackland AFB compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lackland AFB’s place among Texas’.
Lackland AFB weather by month
Highs, lows and precipitation from NOAA’s grid at Lackland AFB’s center; snow, wet days and snow on the ground from San Antonio/seaworld, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 41° | 1.8" | 0.0" | 8 | 0 | 48° – 58° |
| February | 69° | 45° | 1.7" | 0.0" | 7 | 0 | 49° – 65° |
| March | 75° | 52° | 2.3" | 0.0" | 8 | 0 | 57° – 68° |
| April | 82° | 58° | 2.3" | 0.0" | 6 | 0 | 64° – 76° |
| May | 88° | 66° | 3.8" | 0.0" | 7 | 0 | 73° – 81° |
| June | 93° | 72° | 3.3" | 0.0" | 6 | 0 | 79° – 87° |
| July | 96° | 74° | 2.2" | 0.0" | 5 | 0 | 80° – 88° |
| August | 97° | 74° | 2.3" | 0.0" | 4 | 0 | 81° – 89° |
| September | 91° | 69° | 3.4" | 0.0" | 7 | 0 | 77° – 85° |
| October | 83° | 60° | 3.2" | 0.0" | 5 | 0 | 68° – 77° |
| November | 73° | 50° | 2.1" | 0.0" | 5 | 0 | 56° – 67° |
| December | 65° | 43° | 1.8" | 0.0" | 7 | 0 | 47° – 57° |
| Year | 81° | 58° | 30.2" | 0.0" | 76 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 49° to 65°. June is the most reliable, staying within 8°.
Where Lackland AFB’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Lackland AFB’s center.
- Snow: San Antonio/seaworld, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: San Antonio Kelly Afb, TX, 2.1 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Lackland AFB’s climate
What is the weather like in Lackland AFB?
A typical July afternoon reaches 96°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than 96% of U.S. towns.
How cold does it get in Lackland AFB in winter?
January nights average 41°. About 14 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 48°.
How much snow does Lackland AFB get?
About 0.0 inches in a normal winter at San Antonio/seaworld, TX, so most winters see none.
How hot does it get in Lackland AFB?
July, with a typical high of 96° and a low of 74°. About 141 days a year reach 90° and 31 reach 100° (San Antonio Kelly Afb, TX).
When is the first and last frost in Lackland AFB?
In half of years the last spring frost (32°) comes by February 22 and the first fall frost by December 2, about 284 frost-free days, at San Antonio Kelly Afb, TX.
What growing zone is Lackland AFB in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Lackland AFB?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lackland AFB getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lackland AFB.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.