Sulphur, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sulphur, a city in Calcasieu County, Louisiana.
This Afternoon
92°F
Sunny
Sunny, with a high near 92. East wind around 5 mph.
7-day forecast for Sulphur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 92°F | Sunny | 5 mph E | 0% |
| Tonight | 72°F | Clear | 0 to 5 mph E | 0% |
| Saturday | 94°F | Sunny | 0 to 5 mph E | 1% |
| Saturday Night | 74°F | Clear | 0 to 5 mph S | 1% |
| Sunday | 94°F | Sunny | 0 to 5 mph SE | 5% |
| Sunday Night | 76°F | Mostly Clear | 0 to 5 mph SW | 5% |
| Monday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 15% |
| Monday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 15% |
| Tuesday | 96°F | Sunny | 0 to 5 mph NE | 9% |
| Tuesday Night | 76°F | Mostly Clear | 0 mph | 9% |
| Wednesday | 95°F | Sunny | 0 to 5 mph NE | 7% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 5 mph NE | 7% |
| Thursday | 93°F | Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 73°F | Mostly Clear | 5 mph NE | 4% |
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 Sep 19, 2026.