Lake Arthur, LA Weather & Growing Conditions
Today
92°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 4pm. Sunny, with a high near 92. Heat index values as high as 99. Southwest 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 | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 19% |
| Tonight | 79°F | Mostly Clear | 0 to 10 mph SW | 7% |
| Wednesday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 19% |
| Wednesday Night | 79°F | Clear | 0 to 10 mph S | 3% |
| Thursday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph S | 35% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph S | 35% |
| Friday | 91°F | Chance Showers And Thunderstorms | 0 to 10 mph SE | 43% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 0 to 10 mph SE | 43% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 31% |
| Saturday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph SE | 31% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 0 to 10 mph SE | 53% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 53% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 10 mph S | 56% |
| Monday Night | 79°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 42% |
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 Aug 4, 2026.