Simpson, LA Weather & Growing Conditions
Today
96°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 4pm. Sunny, with a high near 96. Heat index values as high as 100. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 25% |
| Tonight | 76°F | Mostly Clear | 0 to 10 mph S | 20% |
| Wednesday | 97°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 31% |
| Wednesday Night | 75°F | Mostly Clear | 0 mph | 8% |
| Thursday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 19% |
| Thursday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 19% |
| Friday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 20% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 20% |
| Saturday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 18% |
| Saturday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 18% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 22% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 22% |
| Monday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 42% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Simpson, LA
Last spring frost
Mar 2
First fall frost
Nov 27
Growing season
271 days
Hardiness zone
9a
Explore more for Simpson, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Boyce 3 Wnw, La (10.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.