Grand Prairie, Texas Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Grand Prairie weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 9:21 AM CDT · Open-Meteo
- TodaySep 21Light Drizzle later13%0.02″96°74°—
- TuesdaySep 22Overcast——94°74°-2°
- WednesdaySep 23Overcast——97°77°+3°
- ThursdaySep 24Overcast——96°79°-1°
- FridaySep 25Overcast——96°78°0°
- SaturdaySep 26Overcast——97°79°+1°
- SundaySep 27Light Drizzle12%—101°80°+4°
Air quality now AQI 51 · Moderate
AQI 51 (Moderate), driven by PM2.5. AQI projected to climb to 109 over the next 6 hours. PM2.5 at 11.2 µg/m³ (AQI 55) with a 0.87 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 8 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 11.2 µg/m³ (AQI 55) with a 0.87 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.87
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:43 PM
- Moonset
- 2:12 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Grand Prairie at a glance
- Today vs. normal: Today averages 85°F (high 96°F, low 74°F), 9°F above the 76°F normal for Sep 21
- Last frost: March 20 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — harvest beans, summer squash, winter squash
16-Day Forecast — Grand Prairie
- Mon96°74°13%
- Tue94°74°3%
- Wed97°77°4%
- Thu96°79°1%
- Fri96°78°1%
- Sat97°79°4%
- Sun101°80°12%
- Mon100°79°20%
- Tue90°75°31%
- Wed91°75°18%
- Thu91°77°12%
- Fri91°78°13%
- Sat87°75°16%
- Sun83°69°10%
- Mon77°61°10%
- Tue78°61°10%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Grand Prairie
Interactive wind and temperature map centered on Grand Prairie — it loads in your browser. Open the full weather map.
Right now in the garden
Late season
As of September 21, the first frost (around November 13) is about 8 weeks away. Frost-tender plants keep producing until then. This city's planting calendar for September: harvest beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Grand Prairie
SPC includes Grand Prairie in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Grand Prairie
Grand Prairie sits in Dallas County, where the year’s longest day runs 14h 18m of daylight and its shortest just 10h 0m — a swing of +4h 18m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Houston, the state’s largest city, lies about 222 miles to the SSE. The nearest town Grand Prairie tracks is Arlington, roughly 6 miles to the W.
Air quality in Grand Prairie
Air quality in Grand Prairie’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 46). See the full air-quality history for Grand Prairie.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| February | lettuce, peas, spinach, radishes | — |
| March | lettuce, peas, spinach, radishes | radishes |
| April | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| May | squash | lettuce, peas, spinach, radishes, summer squash |
| June | squash | tomatoes, peppers, beans, summer squash, garlic |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, carrots | summer squash, winter squash |
| September | — | beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| November | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| December | — | fall brassicas, carrots |
A year in weather
Grand Prairie's warmest month is August (~86°F mean) and its coldest is January (~47°F). Rainfall peaks in October (4.7 inches) and bottoms out in August (1.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 47° | 2.3″ | 4 |
| February | 51° | 2.6″ | 4 |
| March | 59° | 3.4″ | 5 |
| April | 66° | 3.1″ | 4 |
| May | 74° | 4.3″ | 6 |
| June | 82° | 3.5″ | 5 |
| July | 85° | 1.7″ | 3 |
| August | 86° | 1.7″ | 3 |
| September | 79° | 3.3″ | 4 |
| October | 68° | 4.7″ | 5 |
| November | 57° | 2.6″ | 4 |
| December | 49° | 2.8″ | 4 |
Regional context
Similar climates Arlington, TX, Duncanville, TX, Dalworthington Gardens, TX
Per NOAA NCEI 1991-2020 normals, Grand Prairie runs from a 47°F January mean to 85°F in July, a 38°F seasonal spread, with near 36.2 inches of precipitation across about 49 wet days.
Rainfall in Grand Prairie splits evenly between the seasons: October tops out at 4.7 inches over 4.9 rainy days, and August logs 1.7 inches across 2.7 — neither half of Grand Prairie's year dominates. It is a balanced pattern Grand Prairie shares with places like Arlington, TX, Duncanville, TX and Dalworthington Gardens, TX.
Around March 20, Grand Prairie sheds its freezing nights — lettuce, chard, arugula, and mustard greens go into Grand Prairie's beds. Heat-demanding starts go out a fortnight on in Grand Prairie, after the soil warms and cold snaps clear. By November 13, frost is back in Grand Prairie — protect or harvest anything tender. That date is a median: Grand Prairie freezes sooner in half of years.
Similar climates: Arlington, TX, Duncanville, TX, Dalworthington Gardens, TX, Pantego, TX, Cedar Hill, TX.
Frequently asked
- When does it freeze in Grand Prairie?
- Frost typically leaves Grand Prairie by March 20 and returns to Grand Prairie near November 13.
- What is the rainy season in Grand Prairie?
- Grand Prairie sees its heaviest rain in October (around 4.7 inches), part of roughly 36 inches a year.
- What is the warmest month in Grand Prairie?
- The warmest stretch in Grand Prairie comes in August, around 86°F on average.
- What is the coldest month in Grand Prairie?
- On average January is the chilliest month in Grand Prairie, about 47°F.
- When can I start a vegetable garden in Grand Prairie?
- Grand Prairie's last frost (March 20) cues hardy greens; in Grand Prairie, hold heat-lovers two weeks past.
- How many rainy days does Grand Prairie get?
- Expect roughly 49 wet days a year in Grand Prairie.
- What hardiness zone is Grand Prairie?
- Grand Prairie's hardiness zone tracks its winter low; with January near 47°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Grand Prairie?
- Grand Prairie's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Grand Prairie?
- See this week's day-by-day rain chances for Grand Prairie in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Grand Prairie?
- Current conditions for Grand Prairie and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Grand Prairie forecast updated?
- The Grand Prairie forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Grand Prairie?
- Today's sunrise and sunset times for Grand Prairie are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Grand Prairie?
- The next few days in Grand Prairie's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Grand Prairie sits at 32.7°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Grand Prairie
- 75050
- 75051
- 75052
- 75053
- 75054
- 75104
- 75265