Port Allen, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Allen, a city in East Baton Rouge County, Louisiana.
Overnight
68°F
Chance Rain Showers
A chance of rain showers and patchy fog. Mostly cloudy, with a low around 68. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Port Allen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Chance Rain Showers | 5 mph W | 48% |
| Wednesday | 79°F | Patchy Fog then Mostly Sunny | 5 mph NW | 17% |
| Wednesday Night | 55°F | Mostly Clear then Patchy Fog | 0 to 5 mph N | 0% |
| Thursday | 81°F | Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 60°F | Partly Cloudy | 0 mph | 3% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph N | 2% |
| Friday Night | 56°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 75°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 50°F | Partly Cloudy | 5 mph N | 3% |
| Sunday | 69°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 47°F | Partly Cloudy | 5 mph N | 4% |
| Monday | 71°F | Sunny | 5 mph N | 4% |
| Monday Night | 47°F | Mostly Clear | 0 mph | 4% |
| Tuesday | 75°F | Sunny | 0 to 5 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov) for Port Allen (30.444, -91.207). Updated through the day.
Growing snapshot for Port Allen
Last spring frost
Feb 28
First fall frost
Nov 26
Growing season
272 days
Hardiness zone
9a
More local growing data for Port Allen: nearby ZIP 70825 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Baker
Baton Rouge
Brownfields
Central
Denham Springs
Gardere
Inniswold
Merrydale
Monticello
Oak Hills Place
Old Jefferson
Shenandoah
Village St. George
Westminster
Zachary
Climate data from the nearest NOAA station, Lsu Ben-Hur Farm, La (6.2 mi from Port Allen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.