Sulphur, LA Weather & Growing Conditions
Today
93°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Heat index values as high as 101. South wind 0 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 22% |
| Tonight | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SW | 26% |
| Wednesday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 5 mph S | 4% |
| Thursday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 43% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 43% |
| Friday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 36% |
| Friday Night | 74°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 36% |
| Saturday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 33% |
| Saturday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 33% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 52% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 52% |
| Monday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 62% |
| Monday Night | 75°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph S | 62% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sulphur, LA
Last spring frost
Mar 2
First fall frost
Nov 25
Growing season
267 days
Hardiness zone
9a
Explore more for Sulphur, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Moss Bluff 2 Nnw, La (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.