Cotton Valley, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cotton Valley, a town in Webster County, Louisiana.
Today
98°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 98. Heat index values as high as 102. South wind around 0 mph. Chance of precipitation is 20%.
7-day forecast for Cotton Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 19% |
| Tonight | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 19% |
| Wednesday | 98°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 30% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 30% |
| Thursday | 97°F | Sunny | 0 mph | 14% |
| Thursday Night | 76°F | Mostly Clear | 0 mph | 14% |
| Friday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 21% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 21% |
| Saturday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 21% |
| Saturday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 21% |
| Sunday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 16% |
| Sunday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 16% |
| Monday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 15% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 15% |
Forecast source: National Weather Service (api.weather.gov) for Cotton Valley (32.813, -93.423). Updated through the day.
Growing snapshot for Cotton Valley
Last spring frost
Mar 14
First fall frost
Nov 14
Growing season
246 days
Hardiness zone
8b
More local growing data for Cotton Valley: nearby ZIP 71018 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Benton 5E, La (15.7 mi from Cotton Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.