Alamo Heights has warm winters and hot summers
A typical July afternoon reaches 96°, a January night drops to 41°, and snow is almost unheard of.
A year in Alamo Heights at a glance
Each month’s typical high and low, and what it brings.
What stands out about Alamo Heights’s climate
Read from where Alamo Heights sits among Texas’s towns. The page puts what stands out first.
What a year in Alamo Heights feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 277 frost-free days a year
In half of years the last 32° night comes by February 25 and the first by November 28.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Rain and snow in Alamo Heights
May is the wettest month and February the driest. Rain or snow falls on about 89 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
About 0.1" in a normal year, so most winters see none.
Living with Alamo Heights’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
277 frost-free days. The last frost comes by Feb 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 28.
About 0.1" in a normal winter.
Months averaging under 55° run from December through January. Heating is 34% of the year’s heating-and-cooling load.
About 112 days a year reach 90°, and July afternoons average 96°.
The nicest months are January, February, March, April, October, November and December. 1.0 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Alamo Heights averaged 0.9° warmer than the 1900s. The biggest change is in February (+1.9°).
A smaller shift than in 74% of U.S. towns.
Change by month
How Alamo Heights compares
Against every U.S. town on TownTapestry, each counted once, with its place in Texas.
Alamo Heights 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 | 64° | 41° | 2.0" | 0 | 8 | 0 | 48° – 58° |
| February | 68° | 45° | 1.8" | 0 | 10 | 0 | 49° – 64° |
| March | 74° | 52° | 2.5" | 0 | 9 | 0 | 56° – 68° |
| April | 81° | 58° | 2.4" | 0 | 6 | 0 | 64° – 76° |
| May | 87° | 66° | 4.0" | 0 | 8 | 0 | 72° – 80° |
| June | 93° | 72° | 3.4" | 0 | 7 | 0 | 79° – 86° |
| July | 96° | 74° | 2.3" | 0 | 7 | 0 | 80° – 88° |
| August | 97° | 74° | 2.4" | 0 | 4 | 0 | 81° – 89° |
| September | 91° | 69° | 3.6" | 0 | 8 | 0 | 77° – 85° |
| October | 83° | 60° | 3.3" | 0 | 8 | 0 | 68° – 76° |
| November | 72° | 50° | 2.2" | 0 | 7 | 0 | 56° – 67° |
| December | 65° | 43° | 1.9" | 0.1" | 8 | 0 | 47° – 57° |
| Year | 81° | 58° | 31.7" | 0.1" | 89 | 0 |
Heating and cooling a home in Alamo Heights
34% of the work is heating, so air conditioning is the bigger bill.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
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 64°. June is the most reliable, staying within 8°.
Common questions about Alamo Heights’s climate
What is the coldest month in Alamo Heights?
January, with a typical high of 64° and a low of 41°.
What is the hottest month in Alamo Heights?
August, with a typical high of 97° and a low of 74°. About 112 days a year reach 90°.
How much snow does Alamo Heights get?
Almost none. A normal year brings 0.1 inches.
When is the first frost in Alamo Heights?
In half of years the first 32° night comes by November 28, and the last spring frost by February 25.
What is the rainiest month in Alamo Heights?
May, with 4.0 inches of rain and melted snow. The year totals 32 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Alamo Heights.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Alamo Heights itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at San Antonio Incarnate Word, TX (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.