Grand Prairie reaches 100° on about 22 days a year, more than 96% of U.S. towns
A typical July afternoon reaches 96°, a January night drops to 36°, and snow is almost unheard of.
A year in Grand Prairie at a glance
Each month’s typical high and low, and what it brings.
What stands out about Grand Prairie’s climate
Compared with towns across the U.S., with Grand Prairie’s place in Texas beside it.
What a year in Grand Prairie feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 256 frost-free days a year
In half of years the last 32° night comes by March 9 and the first by November 21. Day counts come from NOAA’s station at Joe Pool Lake, TX, 4 miles from the city’s center point, at about the same height; frost dates and degree days from Arlington Muni Airport, 4 miles away.
The 2023 USDA map puts Grand Prairie’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 19°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 38 inches of rain a year
May is the wettest month and July the driest. Rain falls on about 74 days a year. Snow is rare: about 0.8" in a normal year at Arlington Six Flags, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Grand Prairie
43% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Arlington Muni Airport.
Living with Grand Prairie’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
256 frost-free days in zone 8b. The last frost comes by Mar 9 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 21.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 25 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Grand Prairie from natural hazards, river flooding is the largest share (37%); heat waves, cold waves, winter storms and ice storms together are 32%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Grand Prairie and its neighbors
Fort Worth has the coldest January nights next door (35°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Grand Prairie’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Grand Prairie, TX | 36° | 96° | 38" | 0.8" |
| Happy Valley, CA | 39° | 99° | 38" | 0.7" |
| Cayce, SC | 35° | 93° | 46" | 1.2" |
| Lawton, OK | 29° | 96° | 32" | 1.8" |
| Evans, GA | 35° | 92° | 45" | 0.8" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
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°).
A smaller shift than in 88% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods. In a city of 209,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Grand Prairie compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Grand Prairie’s place among Texas’.
Grand Prairie weather by month
Highs, lows and precipitation from NOAA’s grid at Grand Prairie’s center; snow, wet days and snow on the ground from Arlington Six Flags, TX. 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" | 0.0" | 8 | 0 | 52° – 64° |
| April | 77° | 55° | 3.5" | 0.0" | 6 | 0 | 60° – 72° |
| May | 84° | 64° | 4.7" | 0.0" | 8 | 0 | 70° – 79° |
| June | 92° | 72° | 3.9" | 0.0" | 8 | 0 | 79° – 86° |
| July | 96° | 75° | 2.0" | 0.0" | 5 | 0 | 81° – 91° |
| August | 96° | 75° | 2.2" | 0.0" | 5 | 0 | 79° – 93° |
| September | 89° | 68° | 2.9" | 0.0" | 6 | 0 | 74° – 85° |
| October | 79° | 56° | 4.4" | 0.0" | 6 | 0 | 63° – 73° |
| November | 67° | 46° | 2.8" | 0.0" | 6 | 0 | 51° – 63° |
| December | 59° | 38° | 2.8" | 0.3" | 6 | 0 | 40° – 53° |
| Year | 77° | 56° | 37.9" | 0.8" | 74 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 42° to 59°. June is the most reliable, staying within 8°.
Where Grand Prairie’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Grand Prairie’s center.
- Snow: Arlington Six Flags, TX.
- Frost dates, heating and cooling: Arlington Muni Airport, 4 miles away.
- Freezing nights, 90° and 100° days: Joe Pool Lake, TX, 4 miles from the city’s center point, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Grand Prairie’s climate
What is the weather like in Grand Prairie?
A typical July afternoon reaches 96°, a January night drops to 36°, and snow is almost unheard of. Milder January nights than 83% of U.S. towns; hotter July afternoons than 97% of U.S. towns.
How cold does it get in Grand Prairie in winter?
January nights average 36°. About 52 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 42°.
How much snow does Grand Prairie get?
About 0.8 inches in a normal winter at Arlington Six Flags, TX, so most winters see none.
How hot does it get in Grand Prairie?
July, with a typical high of 96° and a low of 75°. About 101 days a year reach 90° and 22 reach 100° (Arlington Muni Airport).
When is the first and last frost in Grand Prairie?
In half of years the last spring frost (32°) comes by March 9 and the first fall frost by November 21, about 256 frost-free days, at Arlington Muni Airport.
What growing zone is Grand Prairie in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 19°.
What is the best time of year to visit Grand Prairie?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Grand Prairie getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Grand Prairie.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.