Huebner-Onion Homestead and Stagecoach Stop · Photo: 25or6to4 · CC BY-SA 3.0Leon Valley reaches 100° on about 21 days a year, more than 95% of U.S. towns
The depth of winter brings overnight lows near 41°. From frosty January to warm July, readings climb 56°. By January nights alone, it runs milder than 90% of U.S. towns. Plan time outside from October to April, when highs sit at 64–83°.
A year in Leon Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Leon Valley’s climate
Compared with towns across the U.S., with Leon Valley’s place in Texas beside it.
What a year in Leon Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 296 frost-free days a year
In half of years the last 32° night comes by February 18 and the first by December 9. Frost and day counts come from NOAA’s station at San Antonio/seaworld, TX, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Leon Valley’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 32 inches of rain a year
May is the wettest month and February the driest. Rain falls on about 81 days a year. Snow is rare: about 0.2" in a normal year at San Antonio International Airport, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Leon Valley
25% 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/seaworld, TX.
Living with Leon Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
296 frost-free days in zone 9a. The last frost comes by Feb 18 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 9.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 1.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Leon Valley from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Leon Valley and similar climates
TownRatings has no climate map of the towns around Leon Valley yet.
Climates most like Leon Valley’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 |
|---|---|---|---|---|
| Leon Valley, TX | 41° | 95° | 32" | 0.2" |
| Chico, CA | 38° | 96° | 31" | 0.0" |
| Lawton, OK | 29° | 96° | 32" | 1.8" |
| Grants Pass, OR | 34° | 90° | 33" | 0.9" |
| Cayce, SC | 35° | 93° | 46" | 1.2" |
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 Leon Valley averaged 1.0° warmer than the 1900s. The biggest change is in February (+1.8°).
A smaller shift than in 81% 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 Leon Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Leon Valley’s place among Texas’.
Leon Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Leon Valley’s center; snow, wet days and snow on the ground from San Antonio International Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 64° | 41° | 1.9" | 0.0" | 7 | 0 | 48° – 58° |
| February | 68° | 45° | 1.8" | 0.1" | 7 | 0 | 49° – 64° |
| March | 74° | 52° | 2.5" | 0.0" | 9 | 0 | 57° – 68° |
| April | 81° | 58° | 2.4" | 0.0" | 6 | 0 | 64° – 75° |
| May | 87° | 66° | 4.1" | 0.0" | 8 | 0 | 72° – 80° |
| June | 93° | 72° | 3.4" | 0.0" | 7 | 0 | 79° – 86° |
| July | 95° | 74° | 2.3" | 0.0" | 5 | 0 | 79° – 88° |
| August | 96° | 74° | 2.4" | 0.0" | 5 | 0 | 81° – 89° |
| September | 91° | 69° | 3.6" | 0.0" | 7 | 0 | 76° – 85° |
| October | 83° | 60° | 3.3" | 0.0" | 6 | 0 | 68° – 76° |
| November | 72° | 50° | 2.2" | 0.0" | 6 | 0 | 56° – 67° |
| December | 65° | 43° | 1.8" | 0.1" | 7 | 0 | 47° – 57° |
| Year | 81° | 58° | 31.6" | 0.2" | 81 | 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 64°. May is the most reliable, staying within 8°.
Where Leon Valley’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 Leon Valley’s center.
- Snow: San Antonio International Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: San Antonio/seaworld, TX, 6 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 Leon Valley’s climate
What is the weather like in Leon Valley?
A typical July afternoon reaches 95°, 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 Leon Valley 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 Leon Valley get?
About 0.2 inches in a normal winter at San Antonio International Airport, so most winters see none.
How hot does it get in Leon Valley?
July, with a typical high of 95° and a low of 74°. About 123 days a year reach 90° and 21 reach 100° (San Antonio/seaworld, TX).
When is the first and last frost in Leon Valley?
In half of years the last spring frost (32°) comes by February 18 and the first fall frost by December 9, about 296 frost-free days, at San Antonio/seaworld, TX.
What growing zone is Leon Valley 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 Leon Valley?
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 Leon Valley getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 81% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Leon Valley.
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.