Round Mountain, TX climate
Round Mountain has mild winters and hot summers. A typical July afternoon reaches 95°, a January night drops to 38°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Round Mountain feels like
Winter
Spring
Summer
Fall
Round Mountain 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 | 61° | 38° | 2.0" | 0.1" | 7 | 0 | 44° – 56° |
| February | 65° | 42° | 1.9" | 0.1" | 8 | 0 | 45° – 61° |
| March | 72° | 49° | 2.7" | 0 | 8 | 0 | 53° – 66° |
| April | 79° | 55° | 2.6" | 0 | 6 | 0 | 61° – 73° |
| May | 85° | 64° | 4.4" | 0 | 8 | 0 | 70° – 79° |
| June | 91° | 70° | 3.1" | 0 | 7 | 0 | 76° – 85° |
| July | 95° | 72° | 2.0" | 0 | 5 | 0 | 79° – 87° |
| August | 95° | 72° | 2.3" | 0 | 5 | 0 | 79° – 89° |
| September | 89° | 66° | 3.6" | 0 | 7 | 0 | 74° – 83° |
| October | 80° | 57° | 3.5" | 0 | 7 | 0 | 66° – 74° |
| November | 70° | 47° | 2.5" | 0 | 6 | 0 | 53° – 64° |
| December | 62° | 39° | 2.0" | 0 | 6 | 0 | 44° – 55° |
| Year | 79° | 56° | 32.4" | 0.2" | 80 | 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 Round Mountain
Round Mountain gets 32 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 80 days a year.
About 235 frost-free days a year
In half of years the last 32° night comes by March 22 and the first one by November 9. That leaves about 235 frost-free days for gardens, longer than 87% of U.S. towns.
Heating and cooling a home in Round Mountain
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Round Mountain, 42% of that work is heating and 58% 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 Round Mountain 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 Round Mountain averaged 0.9° warmer than the 1900s. The biggest change is in March (+1.9°). The shift is smaller than in 76% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Round Mountain’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 45° to 61°. July is the most reliable, staying within 8°.
Common questions about Round Mountain’s climate
What is the coldest month in Round Mountain?
January, with a typical high of 61° and a low of 38°.
What is the hottest month in Round Mountain?
August, with a typical high of 95° and a low of 72°. About 111 days a year reach 90°.
How much snow does Round Mountain get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Round Mountain?
In half of years the first 32° night comes by November 9, and the last spring frost by March 22.
What is the rainiest month in Round Mountain?
May, with 4.4 inches of rain and melted snow. The year totals 32 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Round Mountain itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Johnson City 2n, TX (7 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.