Simpson, LA Weather & Growing Conditions
Tonight
73°F
Clear
Clear, with a low around 73. Southwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Clear | 0 mph | 0% |
| Sunday | 99°F | Sunny | 0 to 5 mph SW | 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 NW | 9% |
| Tuesday Night | 74°F | Partly Cloudy | 0 mph | 9% |
| Wednesday | 97°F | Sunny | 0 to 5 mph NE | 1% |
| Wednesday Night | 71°F | Mostly Clear | 0 to 5 mph NE | 1% |
| Thursday | 95°F | Sunny | 5 mph NE | 0% |
| Thursday Night | 69°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 94°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 69°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Saturday | 94°F | Mostly Sunny | 0 to 5 mph NE | 2% |
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 Sep 20, 2026.