Llano Grande, TX climate
Llano Grande has warm winters and hot summers. A typical July afternoon reaches 97°, a January night drops to 51°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Llano Grande feels like
Winter
Spring
Summer
Fall
Llano Grande 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 | 72° | 51° | 0.9" | 0 | 5 | 0 | 54° – 67° |
| February | 76° | 55° | 0.9" | 0 | 4 | 0 | 58° – 73° |
| March | 82° | 61° | 1.2" | 0 | 3 | 0 | 65° – 77° |
| April | 87° | 65° | 1.5" | 0 | 3 | 0 | 70° – 81° |
| May | 92° | 72° | 2.2" | 0 | 4 | 0 | 77° – 85° |
| June | 96° | 75° | 2.8" | 0 | 5 | 0 | 83° – 89° |
| July | 97° | 76° | 2.2" | 0 | 5 | 0 | 83° – 90° |
| August | 98° | 76° | 1.8" | 0 | 5 | 0 | 85° – 90° |
| September | 93° | 73° | 4.9" | 0 | 9 | 0 | 80° – 86° |
| October | 88° | 66° | 2.6" | 0 | 5 | 0 | 75° – 81° |
| November | 79° | 58° | 1.4" | 0 | 4 | 0 | 63° – 75° |
| December | 73° | 52° | 1.1" | 0.2" | 5 | 0 | 56° – 67° |
| Year | 86° | 65° | 23.4" | 0.2" | 57 | 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 Llano Grande
Llano Grande gets 23 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 57 days a year.
A year-round growing season
Heating and cooling a home in Llano Grande
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Llano Grande, 12% of that work is heating and 88% 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.
Llano Grande and its neighbors
Llano Grande borders 1 town with climate data. January nights across them vary by 0.0°. Weslaco has both the coldest January nights (51°) and the hottest July afternoons (97°). Llano Grande’s January low is 51° and its July high 97°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Llano Grande 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 Llano Grande averaged 1.2° warmer than the 1900s. The biggest change is in February (+2.1°). The shift is smaller than in 51% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Llano Grande’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 58° to 73°. August is the most reliable, staying within 5°.
Common questions about Llano Grande’s climate
What is the coldest month in Llano Grande?
January, with a typical high of 72° and a low of 51°.
What is the hottest month in Llano Grande?
August, with a typical high of 98° and a low of 76°. About 160 days a year reach 90°.
How much snow does Llano Grande get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Llano Grande?
Frost is uncommon. Only 44% of years see a night at 32° or below.
What is the rainiest month in Llano Grande?
September, with 4.9 inches of rain and melted snow. The year totals 23 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Llano Grande itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Mercedes 6 Sse, TX (6 mi, snow) and Weslaco, TX (3 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.