Justin, TX climate
Justin has mild winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 34°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decade3° cooler than normal today. The forecast high is 80°, and a typical Oct 1 in Justin peaks around 83°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Justin feels like
Winter
Spring
Summer
Fall
Justin 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° | 34° | 2.1" | 0 | 6 | 0 | 41° – 53° |
| February | 60° | 38° | 2.5" | 0.1" | 6 | 0 | 41° – 58° |
| March | 68° | 46° | 3.5" | 0 | 7 | 0 | 51° – 63° |
| April | 76° | 53° | 3.2" | 0 | 6 | 0 | 59° – 71° |
| May | 83° | 62° | 4.6" | 0 | 8 | 0 | 69° – 79° |
| June | 91° | 70° | 3.9" | 0 | 6 | 0 | 78° – 86° |
| July | 96° | 74° | 2.5" | 0 | 4 | 0 | 81° – 91° |
| August | 96° | 74° | 2.4" | 0 | 5 | 0 | 79° – 92° |
| September | 89° | 66° | 3.1" | 0 | 5 | 0 | 74° – 84° |
| October | 78° | 55° | 4.3" | 0 | 6 | 0 | 61° – 72° |
| November | 66° | 44° | 2.7" | 0 | 6 | 0 | 49° – 61° |
| December | 58° | 36° | 2.6" | 0 | 5 | 0 | 39° – 51° |
| Year | 76° | 54° | 37.3" | 0.1" | 70 | 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 Justin
Justin gets 37 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 70 days a year.
About 251 frost-free days a year
In half of years the last 32° night comes by March 13 and the first one by November 20. That leaves about 251 frost-free days for gardens, longer than 90% of U.S. towns.
Heating and cooling a home in Justin
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Justin, 48% of that work is heating and 52% 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.
Justin and its neighbors
Justin borders 1 town with climate data. January nights across them vary by 0.3°. Northlake has both the coldest January nights (34°) and the hottest July afternoons (96°). Justin’s January low is 34° and its July high 96°.