Glenn Heights, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenn Heights, a city in Dallas County, Texas.
This Afternoon
98°F
Sunny
Sunny. High near 98, with temperatures falling to around 96 in the afternoon. Heat index values as high as 100. Southeast wind around 5 mph.
7-day forecast for Glenn Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 5 mph SE | 0% |
| Tonight | 73°F | Clear | 5 mph S | 0% |
| Saturday | 98°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 74°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 to 10 mph S | 5% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 5 mph S | 34% |
| Monday | 95°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph WSW | 34% |
| Monday Night | 73°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 | 71°F | Partly Cloudy | 5 to 10 mph NE | 9% |
| Wednesday | 94°F | Mostly Sunny | 5 to 10 mph NE | 7% |
| Wednesday Night | 71°F | Partly Cloudy | 5 to 10 mph ENE | 6% |
| Thursday | 94°F | Mostly Sunny | 5 to 10 mph ENE | 4% |
| Thursday Night | 70°F | Partly Cloudy | 5 to 10 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov) for Glenn Heights (32.551, -96.854). Updated through the day.
Growing snapshot for Glenn Heights
Last spring frost
Mar 6
First fall frost
Nov 25
Growing season
265 days
Hardiness zone
8b
More local growing data for Glenn Heights: nearby ZIP 75115 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Dallas Redbird Ap, Tx (5.6 mi from Glenn Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.