Duncanville, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Duncanville, a city in Dallas County, Texas.
Tonight
75°F
Clear
Clear. Low around 75, with temperatures rising to around 77 overnight. Heat index values as high as 97. South southeast wind around 5 mph.
7-day forecast for Duncanville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Clear | 5 mph SSE | 0% |
| Saturday | 99°F | Sunny | 5 to 10 mph S | 0% |
| Saturday Night | 75°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 to 10 mph S | 6% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms | 5 mph S | 38% |
| Monday | 95°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph WSW | 38% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph ENE | 18% |
| Tuesday | 94°F | Mostly Sunny | 5 to 10 mph NNE | 14% |
| Tuesday Night | 72°F | Partly Cloudy | 5 to 10 mph NE | 8% |
| Wednesday | 94°F | Mostly Sunny | 5 to 10 mph NE | 6% |
| Wednesday Night | 72°F | Partly Cloudy | 5 to 10 mph ENE | 6% |
| Thursday | 94°F | Mostly Sunny | 5 to 10 mph ENE | 5% |
| Thursday Night | 72°F | Partly Cloudy | 5 to 10 mph E | 5% |
| Friday | 93°F | Mostly Sunny | 5 to 10 mph ENE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Duncanville (32.646, -96.914). Updated through the day.
Growing snapshot for Duncanville
Last spring frost
Mar 20
First fall frost
Nov 13
Growing season
236 days
Hardiness zone
8b
More local growing data for Duncanville: nearby ZIP 75137 weather · frost dates · planting calendar · Texas frost dates
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Grand Prairie
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Wilmer
Climate data from the nearest NOAA station, Joe Pool Lake, Tx (3.6 mi from Duncanville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.