Grand Prairie, Texas climate: Normal weather by month, frost dates and records
Grand Prairie's normal year runs from 33°F January nights to 97°F August afternoons, with 41.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.7°C, January lows of 0°C, August highs of 36°C, 1,043 mm of precipitation a year.
- NOAA stationJoe Pool Lake
- Station IDUSC00414597
- Location32.64°N 96.97°W
- Elevation591 ft (180 m)
- From the center4 miles
- Population207,331
On October 14, the normal high in Grand Prairie is 81°F and the normal low 55°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Grand Prairie.
- Jan 58° 33°
- Feb 62° 38°
- Mar 69° 45°
- Apr 77° 53°
- May 84° 61°
- Jun 92° 69°
- Jul 96° 73°
- Aug 97° 73°
- Sep 90° 66°
- Oct 80° 54°
- Nov 68° 45°
- Dec 60° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Grand Prairie each month?
August is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 33°F. The most precipitation falls in October (4.96 in), the least in July (2.33 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 58°F | 33°F | 45.5°F | 2.73 | 8 | <1 | 16 | 10 h 10 min |
| February | 62°F | 38°F | 49.7°F | 2.95 | 7 | <1 | 10 | 11 h |
| March | 69°F | 45°F | 57.1°F | 3.80 | 7 | <1 | 5 | 12 h |
| April | 77°F | 53°F | 64.8°F | 3.66 | 6 | 1 | 1 | 13 h |
| May | 84°F | 61°F | 72.3°F | 4.70 | 9 | 5 | <1 | 13 h 50 min |
| June | 92°F | 69°F | 80.1°F | 4.24 | 7 | 21 | <1 | 14 h 20 min |
| July | 96°F | 73°F | 84.1°F | 2.33 | 5 | 27 | <1 | 14 h 10 min |
| August | 97°F | 73°F | 84.6°F | 2.37 | 6 | 27 | <1 | 13 h 20 min |
| September | 90°F | 66°F | 78.3°F | 3.12 | 6 | 17 | <1 | 12 h 30 min |
| October | 80°F | 54°F | 67.0°F | 4.96 | 6 | 4 | 1 | 11 h 30 min |
| November | 68°F | 45°F | 56.1°F | 3.17 | 5 | <1 | 6 | 10 h 30 min |
| December | 60°F | 35°F | 47.6°F | 3.03 | 6 | <1 | 14 | 10 h |
| Year (annual) | 78°F | 54°F | 65.6°F | 41.06 | 78 | 101 | 52 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 0°C | 7.5°C | 69 mm |
| February | 17°C | 3°C | 9.8°C | 75 mm |
| March | 21°C | 7°C | 13.9°C | 97 mm |
| April | 25°C | 12°C | 18.2°C | 93 mm |
| May | 29°C | 16°C | 22.4°C | 119 mm |
| June | 33°C | 20°C | 26.7°C | 108 mm |
| July | 35°C | 23°C | 28.9°C | 59 mm |
| August | 36°C | 23°C | 29.2°C | 60 mm |
| September | 32°C | 19°C | 25.7°C | 79 mm |
| October | 26°C | 12°C | 19.4°C | 126 mm |
| November | 20°C | 7°C | 13.4°C | 81 mm |
| December | 16°C | 2°C | 8.7°C | 77 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Arlington Six Flags (10 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414597; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Grand Prairie?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, November has the fewest days with rain (5).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414597.
When is the last frost in Grand Prairie?
In Grand Prairie, the last spring frost (32°F) comes after March 20 in half of years and after April 8 in one year in ten; the first autumn frost comes before November 13 in half of years and before October 27 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 201 year in 10 after April 8; 9 in 10 after February 28
- First autumn frost, half of years before
- November 131 year in 10 before October 27; 9 in 10 before December 3
NOAA puts the median frost-free season at 236 days, and the season without a hard freeze (28°F) at 261 days.
A hard freeze (28°F) comes after March 8 in half of springs and before November 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Grand Prairie in zone 8b across its 4 ZIP code areas (8b in 75050, the largest).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00414597; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Grand Prairie ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Grand Prairie's 4 ZIP code areas are all in zone 8b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Grand Prairie?
In a normal year in Grand Prairie, 101 days a year reach 90°F (22 of them 100°F or more), 52 nights fall to 32°F or colder and 78 days bring measurable precipitation.
- Days at 90°F or more
- 101a normal year
- Days at 100°F or more
- 22a normal year
- Nights at 32°F or colder
- 52a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 78a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00414597.
How sunny is Grand Prairie?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Grand Prairie, 4.7 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (68%). Among the 459 U.S. places of 50,000 or more, that ranks tied 176th (with 33 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.9 |
| February | 68% | 3.3 |
| March | 72% | 4.4 |
| April | 76% | 5.4 |
| May | 76% | 5.8 |
| June | 84% | 6.7 |
| July | 88% | 6.7 |
| August | 87% | 6.2 |
| September | 84% | 5.2 |
| October | 80% | 4.1 |
| November | 76% | 3.1 |
| December | 73% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Grand Prairie need?
A normal year in Grand Prairie brings 2,342 heating degree days, 56% fewer than the median U.S. place (5,373), and 2,591 cooling degree days, 2.9 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,315 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 607 | 1 |
| February | 435 | 7 |
| March | 273 | 28 |
| April | 94 | 88 |
| May | 14 | 242 |
| June | 0 | 452 |
| July | 0 | 592 |
| August | 0 | 609 |
| September | 5 | 404 |
| October | 79 | 139 |
| November | 292 | 25 |
| December | 542 | 3 |
| Year (annual) | 2,342 | 2,591 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414597. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Grand Prairie's climate compare?
Grand Prairie is warmer than 157 of the other 320 places with their own NOAA record in Texas, and wetter than 237. Across the 7,247 U.S. stations with normals, its annual mean of 65.6°F is warmer than 89%.
In the Köppen classification computed from these normals, Grand Prairie is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Grand Prairie share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- DeSoto, TXalso near: Waxahachie (12 mi, 65.2°F a year); Ferris (13 mi, 66.0°F a year)56,711 people · 7 mi SE
- Cedar Hill, TX49,618 people · 4 mi S
- Duncanville, TX39,203 people · 4 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Grand Prairie's climate
What is the coldest month in Grand Prairie?
January, with a normal high of 58°F and a normal low of 33°F. The warmest is August (97°F by day, 73°F at night).
Does it snow in Grand Prairie?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Grand Prairie's NOAA station; the nearest record that keeps one, Arlington Six Flags (10 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Grand Prairie?
October, with 4.96 in of precipitation in a normal year; the driest is July with 2.33 in.
What plant hardiness zone is Grand Prairie in?
The USDA's 2023 map puts Grand Prairie in zone 8b across its 4 ZIP code areas (8b in 75050, the largest).
How late can frost come in Grand Prairie?
In half of years the last 32°F night comes after March 20; in one year in ten it comes after April 8. Waiting until April 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Grand Prairie in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Arlington, TX7 miles from this station, 66.8°F a year
- Arlington Six Flags, TX10 miles from this station, 65.1°F a year
- Dallas Love Field, TX16 miles from this station, 68.0°F a year
- Waxahachie, TX17 miles from this station, 65.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made