Sulphur, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sulphur, a city in Calcasieu County, Louisiana.
Overnight
76°F
Mostly Clear
Mostly clear, with a low around 76. Wind around 0 mph.
7-day forecast for Sulphur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 24% |
| Tuesday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 21% |
| Wednesday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 24% |
| Wednesday Night | 76°F | Mostly Clear | 0 to 5 mph S | 3% |
| Thursday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 45% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SE | 45% |
| Friday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 37% |
| Friday Night | 75°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 37% |
| Saturday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 35% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 35% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 53% |
| Sunday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 53% |
| Monday | 90°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 61% |
Forecast source: National Weather Service (api.weather.gov) for Sulphur (30.230, -93.356). Updated through the day.
Growing snapshot for Sulphur
Last spring frost
Mar 2
First fall frost
Nov 25
Growing season
267 days
Hardiness zone
9a
More local growing data for Sulphur: nearby ZIP 70663 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Moss Bluff 2 Nnw, La (12.1 mi from Sulphur). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.