Union Valley, TX climate
Union Valley has mild winters and hot summers. A typical July afternoon reaches 94°, a January night drops to 35°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Union Valley feels like
Winter
Spring
Summer
Fall
Union Valley 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 | 56° | 35° | 2.9" | 0 | 8 | 0 | 41° – 53° |
| February | 60° | 39° | 3.1" | 0 | 7 | 0 | 41° – 58° |
| March | 67° | 46° | 3.9" | 0 | 9 | 0 | 52° – 63° |
| April | 75° | 53° | 3.7" | 0 | 8 | 0 | 59° – 70° |
| May | 82° | 62° | 4.8" | 0 | 9 | 0 | 68° – 77° |
| June | 90° | 70° | 3.9" | 0 | 8 | 0 | 77° – 85° |
| July | 94° | 73° | 2.2" | 0 | 6 | 0 | 79° – 89° |
| August | 95° | 73° | 2.5" | 0 | 5 | 0 | 78° – 91° |
| September | 88° | 66° | 3.1" | 0 | 6 | 0 | 73° – 83° |
| October | 78° | 54° | 4.7" | 0 | 7 | 0 | 61° – 71° |
| November | 66° | 45° | 3.3" | 0 | 7 | 0 | 49° – 61° |
| December | 57° | 37° | 3.7" | 0.2" | 8 | 0 | 39° – 52° |
| Year | 76° | 54° | 41.7" | 0.2" | 88 | 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 Union Valley
Union Valley gets 42 inches of rain and melted snow a year. May is the wettest month and July the driest. Rain or snow falls on about 88 days a year.
About 252 frost-free days a year
In half of years the last 32° night comes by March 11 and the first one by November 21. That leaves about 252 frost-free days for gardens, longer than 91% of U.S. towns.
Heating and cooling a home in Union Valley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Union Valley, 49% of that work is heating and 51% 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 Union Valley 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 Union Valley averaged 0.9° warmer than the 1900s. The biggest change is in February (+2.2°). The shift is smaller than in 77% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Union Valley’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 41° to 58°. June is the most reliable, staying within 8°.
Common questions about Union Valley’s climate
What is the coldest month in Union Valley?
January, with a typical high of 56° and a low of 35°.
What is the hottest month in Union Valley?
August, with a typical high of 95° and a low of 73°. About 86 days a year reach 90°.
How much snow does Union Valley get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Union Valley?
In half of years the first 32° night comes by November 21, and the last spring frost by March 11.
What is the rainiest month in Union Valley?
May, with 4.8 inches of rain and melted snow. The year totals 42 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Union Valley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Lavon Dam, TX (15 mi, snow) and Wills Pt, TX (21 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.