Simpson, LA Weather & Growing Conditions
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 102. East wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 0 to 5 mph E | 0% |
| Tonight | 73°F | Clear | 0 to 5 mph S | 0% |
| Sunday | 99°F | Sunny | 0 mph | 0% |
| Sunday Night | 75°F | Mostly Clear | 0 mph | 0% |
| Monday | 100°F | Sunny | 0 mph | 4% |
| Monday Night | 75°F | Partly Cloudy | 0 mph | 9% |
| Tuesday | 100°F | Sunny | 0 to 5 mph N | 10% |
| Tuesday Night | 74°F | Partly Cloudy | 0 mph | 10% |
| Wednesday | 96°F | Sunny | 0 to 5 mph NE | 1% |
| Wednesday Night | 71°F | Mostly Clear | 0 to 5 mph NE | 1% |
| Thursday | 94°F | Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 69°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 93°F | Mostly Sunny | 0 to 5 mph NE | 1% |
| Friday Night | 68°F | Partly Cloudy | 0 to 5 mph NE | 0% |
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 (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.