Lake Arthur, LA Weather & Growing Conditions
Today
91°F
Sunny
Sunny, with a high near 91. Heat index values as high as 100. East wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 5 to 10 mph E | 1% |
| Tonight | 77°F | Mostly Clear | 0 to 10 mph SE | 1% |
| Sunday | 92°F | Sunny | 0 to 10 mph SE | 3% |
| Sunday Night | 78°F | Mostly Clear | 0 to 10 mph S | 1% |
| Monday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 18% |
| Monday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 18% |
| Tuesday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 18% |
| Tuesday Night | 78°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 18% |
| Wednesday | 94°F | Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 75°F | Mostly Clear | 5 to 10 mph NE | 12% |
| Thursday | 92°F | Sunny | 10 mph NE | 7% |
| Thursday Night | 74°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Friday | 91°F | Mostly Sunny | 10 mph NE | 7% |
| Friday Night | 73°F | Partly Cloudy | 5 to 10 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lake Arthur, LA
Last spring frost
Feb 2
First fall frost
Dec 23
Growing season
323 days
Hardiness zone
9b
Explore more for Lake Arthur, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Rockefeller Wl Refuge, La (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.