Mont Belvieu, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mont Belvieu, a city in Chambers County, Texas.
Tonight
73°F
Clear
Clear, with a low around 73. East wind 0 to 5 mph.
7-day forecast for Mont Belvieu
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Clear | 0 to 5 mph E | 0% |
| Saturday | 92°F | Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 75°F | Mostly Clear | 0 to 5 mph SE | 3% |
| Sunday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 20% |
| Sunday Night | 77°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 20% |
| Monday | 93°F | Mostly Sunny | 0 mph | 12% |
| Monday Night | 77°F | Mostly Clear | 0 to 5 mph NW | 12% |
| Tuesday | 95°F | Sunny | 0 to 5 mph NE | 12% |
| Tuesday Night | 77°F | Mostly Clear | 0 mph | 12% |
| Wednesday | 94°F | Sunny | 0 to 5 mph NE | 11% |
| Wednesday Night | 76°F | Mostly Clear | 0 to 5 mph NE | 11% |
| Thursday | 92°F | Sunny | 5 to 10 mph NE | 8% |
| Thursday Night | 74°F | Mostly Clear | 0 to 5 mph NE | 8% |
| Friday | 90°F | Sunny | 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mont Belvieu (29.852, -94.868). Updated through the day.
Growing snapshot for Mont Belvieu
Last spring frost
Feb 20
First fall frost
Dec 4
Growing season
292 days
Hardiness zone
9b
More local growing data for Mont Belvieu: nearby ZIP 77580 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Baytown, Tx (7.9 mi from Mont Belvieu). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.