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Area Conditions for Port Allen, LA
 
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Temperature: 95 oF
Feels Like: 97 oF
Humidity: 37%
Barometer: 29.88
Dew Point: 65 oF
Wind Dir.: ESE
Wind Speed: 9 mph
Sunrise: 6:51
Sunset: 7:03
Observation: Mostly Sunny
Radar
As reported at BATON ROUGE, LA at 4:00 PM

5-day Forecast for Port Allen, LA
Date Sun
9/20
Mon
9/21
Tue
9/22
Wed
9/23
Thu
9/24
Weather Condition Partly Cloudy Thunder Storms Thunder Storms Mostly Cloudy Clear
Weather Partly Cloudy Thunder Storms Thunder Storms Mostly Cloudy Clear
Temperature (°F)
Low/High
70/95 74/94 72/95 73/95 72/93
Feels Like (°F)
Low/High
70/100 76/101 73/101 75/101 73/95
Dew Point (°F) 70 72 72 71 65
Humidity (%) 51 61 60 56 49
Wind Speed (mph) 4 4 4 6 7
Precipitation
Chance
(%)
- 30 36 - -
Precipitation
Amount
(inches)
S=Snow, L=Liquid
None Rain
0.07
Rain
0.08
None None
Evapo-
transpiration

(inches/day)
0.17 0.15 0.16 0.19 0.25

County Forecast for Port Allen , LA
 
210200-
West Baton Rouge-
Including the cities of Port Allen, Addis, and Brusly
121 PM CDT Sun Sep 20 2026

This afternoon   Sunny. Near steady temperature in the mid 90s. Southeast winds around 5 mph. Heat index values up to 106.
Tonight   Mostly clear. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable.
Monday   Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. North winds around 5 mph. Chance of rain 20 percent. Heat index values up to 107.
Monday night   Partly cloudy with a slight chance of showers and thunderstorms in the evening, then clear after midnight. Lows in the mid 70s. Southeast winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent.
Tuesday   Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Northeast winds around 5 mph. Chance of rain 20 percent. Heat index values up to 109.
Tuesday night through thursday   Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110.
Thursday night through saturday   Partly cloudy. Lows in the lower 70s. Highs in the lower 90s.

DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heavy Rain Moving Through Northern US This Weekend
Posted at 11:40AM Fri Sep 18, 2026 CDT
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