Mer Rouge, LA Weather & Growing Conditions
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. East wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 0 mph | 0% |
| Tonight | 72°F | Mostly Clear | 0 mph | 1% |
| Sunday | 99°F | Sunny | 0 mph | 1% |
| Sunday Night | 72°F | Mostly Clear | 0 mph | 0% |
| Monday | 98°F | Mostly Sunny | 0 mph | 10% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 0 mph | 16% |
| Tuesday | 96°F | Sunny | 0 to 5 mph N | 13% |
| Tuesday Night | 68°F | Mostly Clear | 0 to 5 mph NNE | 13% |
| Wednesday | 92°F | Sunny | 5 mph NNE | 2% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 5 mph NNE | 2% |
| Thursday | 90°F | Sunny | 5 mph NNE | 0% |
| Thursday Night | 65°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Friday | 90°F | Mostly Sunny | 0 to 5 mph NE | 1% |
| Friday Night | 65°F | Partly Cloudy | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mer Rouge, LA
Last spring frost
Mar 15
First fall frost
Nov 12
Growing season
241 days
Hardiness zone
8b
Explore more for Mer Rouge, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Bastrop, La (13.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.