Mount Vernon, TX Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 99. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 mph S | 4% |
| Tonight | 76°F | Mostly Clear | 5 mph SSE | 4% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 1% |
| Wednesday Night | 77°F | Mostly Clear | 5 mph SSE | 1% |
| Thursday | 98°F | Sunny | 5 to 10 mph SSW | 3% |
| Thursday Night | 76°F | Partly Cloudy | 5 mph SSE | 3% |
| Friday | 96°F | Sunny | 5 mph S | 12% |
| Friday Night | 75°F | Mostly Clear | 5 mph SSE | 12% |
| Saturday | 96°F | Sunny | 5 mph S | 13% |
| Saturday Night | 75°F | Mostly Clear | 5 mph SSE | 13% |
| Sunday | 96°F | Sunny | 5 mph S | 8% |
| Sunday Night | 75°F | Mostly Clear | 5 mph S | 8% |
| Monday | 96°F | Sunny | 5 to 10 mph S | 9% |
| Monday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Vernon, TX
Last spring frost
Mar 15
First fall frost
Nov 16
Growing season
245 days
Hardiness zone
8b
Explore more for Mount Vernon, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Mt Vernon, Tx (7.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.