Cotulla, TX climate
Cotulla has warm winters and hot summers, with very little rain. A typical July afternoon reaches 99°, a January night drops to 42°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Cotulla feels like
Winter
Spring
Summer
Fall
Cotulla 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 | 67° | 42° | 1.1" | 0 | 4 | 0 | 50° – 61° |
| February | 72° | 47° | 1.1" | 0 | 3 | 0 | 52° – 68° |
| March | 79° | 54° | 1.7" | 0 | 4 | 0 | 60° – 71° |
| April | 86° | 59° | 1.6" | 0 | 3 | 0 | 66° – 79° |
| May | 92° | 68° | 2.6" | 0 | 4 | 0 | 75° – 84° |
| June | 97° | 73° | 2.2" | 0 | 3 | 0 | 81° – 89° |
| July | 99° | 74° | 2.2" | 0 | 4 | 0 | 81° – 90° |
| August | 99° | 74° | 1.8" | 0 | 3 | 0 | 83° – 90° |
| September | 93° | 70° | 2.9" | 0 | 5 | 0 | 78° – 86° |
| October | 86° | 61° | 2.1" | 0 | 3 | 0 | 70° – 79° |
| November | 76° | 51° | 1.2" | 0 | 3 | 0 | 58° – 69° |
| December | 68° | 43° | 1.2" | 0 | 3 | 0 | 49° – 59° |
| Year | 84° | 60° | 21.6" | 0.0" | 42 | 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 Cotulla
Cotulla gets 22 inches of rain and melted snow a year. September is the wettest month and January the driest. Rain or snow falls on about 42 days a year.
About 300 frost-free days a year
In half of years the last 32° night comes by February 11 and the first one by December 3. That leaves about 300 frost-free days for gardens, longer than 95% of U.S. towns.
Heating and cooling a home in Cotulla
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Cotulla, 20% of that work is heating and 80% 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 Cotulla 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 Cotulla averaged 1.2° warmer than the 1900s. The biggest change is in February (+2.5°). The shift is smaller than in 55% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Cotulla’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 52° to 68°. August is the most reliable, staying within 6°.
Common questions about Cotulla’s climate
What is the coldest month in Cotulla?
January, with a typical high of 67° and a low of 42°.
What is the hottest month in Cotulla?
August, with a typical high of 99° and a low of 74°. About 166 days a year reach 90°.
How much snow does Cotulla get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Cotulla?
In half of years the first 32° night comes by December 3, and the last spring frost by February 11.
What is the rainiest month in Cotulla?
September, with 2.9 inches of rain and melted snow. The year totals 22 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Cotulla itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Los Angeles 4 Wsw, TX (10 mi, snow) and Cotulla La Salle Co Airport, 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.