Mont Belvieu, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mont Belvieu, a city in Chambers County, Texas.
Overnight
57°F
Mostly Clear
Mostly clear, with a low around 57. North wind around 5 mph.
7-day forecast for Mont Belvieu
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Mostly Clear | 5 mph N | 0% |
| Wednesday | 77°F | Sunny | 5 mph N | 0% |
| Wednesday Night | 54°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 78°F | Sunny | 0 to 5 mph E | 7% |
| Thursday Night | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph S | 16% |
| Friday | 80°F | Mostly Sunny | 5 mph N | 4% |
| Friday Night | 57°F | Partly Cloudy | 5 mph NE | 1% |
| Saturday | 74°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Saturday Night | 52°F | Mostly Cloudy | 5 mph NE | 9% |
| Sunday | 68°F | Mostly Sunny | 5 to 10 mph N | 11% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph N | 4% |
| Monday | 70°F | Sunny | 0 to 5 mph NE | 7% |
| Monday Night | 49°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 73°F | Mostly Sunny | 0 mph | 3% |
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 Nov 4, 2026.