Grand Prairie, TX climate
Grand Prairie has mild winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 36°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grand Prairie feels like
Winter
Spring
Summer
Fall
Grand Prairie 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 | 57° | 36° | 2.4" | 0.1" | 5 | 0 | 42° – 55° |
| February | 62° | 40° | 2.7" | 0.4" | 7 | 0 | 42° – 59° |
| March | 69° | 48° | 3.6" | 0 | 8 | 0 | 52° – 64° |
| April | 77° | 55° | 3.5" | 0 | 6 | 0 | 60° – 72° |
| May | 84° | 64° | 4.7" | 0 | 8 | 0 | 70° – 79° |
| June | 92° | 72° | 3.9" | 0 | 8 | 0 | 79° – 86° |
| July | 96° | 75° | 2.0" | 0 | 5 | 0 | 81° – 91° |
| August | 96° | 75° | 2.2" | 0 | 5 | 0 | 79° – 93° |
| September | 89° | 68° | 2.9" | 0 | 6 | 0 | 74° – 85° |
| October | 79° | 56° | 4.4" | 0 | 6 | 0 | 63° – 73° |
| November | 67° | 46° | 2.8" | 0 | 6 | 0 | 51° – 63° |
| December | 59° | 38° | 2.8" | 0.3" | 6 | 0 | 40° – 53° |
| Year | 77° | 56° | 37.9" | 0.8" | 74 | 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 Grand Prairie
Grand Prairie gets 38 inches of rain and melted snow a year. May is the wettest month and July the driest. Rain or snow falls on about 74 days a year.
About 256 frost-free days a year
In half of years the last 32° night comes by March 9 and the first one by November 21. That leaves about 256 frost-free days for gardens, longer than 91% of U.S. towns.
Heating and cooling a home in Grand Prairie
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grand Prairie, 43% of that work is heating and 57% 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.
Grand Prairie and its neighbors
Grand Prairie borders 7 towns with climate data. January nights across them vary by 1.8°. Fort Worth has both the coldest January nights (35°) and the hottest July afternoons (96°). Grand Prairie’s January low is 36° and its July high 96°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Grand Prairie 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 Grand Prairie averaged 0.8° warmer than the 1900s. The biggest change is in January (+2.0°). The shift is smaller than in 82% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grand Prairie’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 42° to 59°. June is the most reliable, staying within 8°.
Common questions about Grand Prairie’s climate
What is the coldest month in Grand Prairie?
January, with a typical high of 57° and a low of 36°.
What is the hottest month in Grand Prairie?
August, with a typical high of 96° and a low of 75°. About 106 days a year reach 90°.
How much snow does Grand Prairie get?
Almost none. A normal year brings 0.8 inches.
When is the first frost in Grand Prairie?
In half of years the first 32° night comes by November 21, and the last spring frost by March 9.
What is the rainiest month in Grand Prairie?
May, with 4.7 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grand Prairie itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Arlington Six Flags, TX (6 mi, snow) and Arlington Municipal Airport, TX (4 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.