Sierra Blanca, TX climate
Sierra Blanca has mild winters and hot summers, with very little rain. A typical July afternoon reaches 93°, a January night drops to 29°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sierra Blanca feels like
Winter
Spring
Summer
Fall
Sierra Blanca 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 | 58° | 29° | 0.4" | 0.1" | 2 | 0 | 39° – 47° |
| February | 64° | 33° | 0.4" | 0 | 2 | 0 | 43° – 52° |
| March | 71° | 39° | 0.3" | 0 | 1 | 0 | 51° – 61° |
| April | 78° | 46° | 0.3" | 0 | 1 | 0 | 58° – 68° |
| May | 87° | 54° | 0.5" | 0 | 2 | 0 | 67° – 76° |
| June | 94° | 63° | 1.0" | 0 | 3 | 0 | 75° – 82° |
| July | 93° | 67° | 2.0" | 0 | 6 | 0 | 76° – 84° |
| August | 91° | 65° | 2.0" | 0 | 6 | 0 | 75° – 83° |
| September | 86° | 59° | 1.5" | 0 | 4 | 0 | 67° – 76° |
| October | 78° | 47° | 1.0" | 0 | 3 | 0 | 60° – 66° |
| November | 67° | 36° | 0.4" | 0 | 2 | 0 | 45° – 57° |
| December | 58° | 29° | 0.6" | 0 | 2 | 0 | 40° – 48° |
| Year | 77° | 47° | 10.4" | 0.1" | 34 | 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 Sierra Blanca
Sierra Blanca gets 10 inches of rain and melted snow a year. August is the wettest month and March the driest. Rain or snow falls on about 34 days a year.
About 221 frost-free days a year
In half of years the last 32° night comes by March 29 and the first one by November 6. That leaves about 221 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Sierra Blanca
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sierra Blanca, 53% of that work is heating and 47% is cooling.
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 Sierra Blanca 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 Sierra Blanca averaged 1.5° warmer than the 1900s. The biggest change is in March (+2.5°). The shift is larger than in 73% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sierra Blanca’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 45° to 57°. June is the most reliable, staying within 7°.
Common questions about Sierra Blanca’s climate
What is the coldest month in Sierra Blanca?
January, with a typical high of 58° and a low of 29°.
What is the hottest month in Sierra Blanca?
June, with a typical high of 94° and a low of 63°. About 133 days a year reach 90°.
How much snow does Sierra Blanca get?
Almost none. A normal year brings 0.1 inches.
When is the first frost in Sierra Blanca?
In half of years the first 32° night comes by November 6, and the last spring frost by March 29.
What is the rainiest month in Sierra Blanca?
August, with 2.0 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sierra Blanca itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ft Hancock 8sse, TX (24 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.