Thursday, September 17, 2026  
 
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Area Conditions for Port Allen, LA
 
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Temperature: 76 oF
Feels Like: 77 oF
Humidity: 74%
Barometer: 30.16
Dew Point: 67 oF
Wind Dir.: N
Wind Speed: 0 mph
Sunrise: 6:50
Sunset: 7:06
Observation: Clear
Radar
As reported at BATON ROUGE, LA at 10:00 PM

5-day Forecast for Port Allen, LA
Date Fri
9/18
Sat
9/19
Sun
9/20
Mon
9/21
Tue
9/22
Weather Condition Clear Clear Thunder Storms Thunder Storms Partly Cloudy
Weather Clear Clear Thunder Storms Thunder Storms Partly Cloudy
Temperature (°F)
Low/High
68/93 70/95 72/95 74/95 72/95
Feels Like (°F)
Low/High
68/95 70/97 74/101 76/103 73/101
Dew Point (°F) 66 68 72 72 70
Humidity (%) 53 53 59 60 57
Wind Speed (mph) 5 4 3 5 5
Precipitation
Chance
(%)
- - 20 29 -
Precipitation
Amount
(inches)
S=Snow, L=Liquid
None None Rain
0.03
Rain
0.09
None
Evapo-
transpiration

(inches/day)
0.23 0.22 0.16 0.17 0.18

County Forecast for Port Allen , LA
 
180600-
West Baton Rouge-
Including the cities of Port Allen, Addis, and Brusly
535 PM CDT Thu Sep 17 2026

Tonight   Clear. Lows around 70. East winds 5 to 10 mph this evening, becoming light and variable.
Friday   Sunny. Highs in the mid 90s. Northeast winds 5 to 10 mph.
Friday night   Clear. Lows around 70. Southeast winds around 5 mph in the evening, becoming light and variable.
Saturday   Sunny. Highs in the mid 90s. Northeast winds around 5 mph, becoming east around 5 mph in the afternoon.
Saturday night   Clear. Lows in the lower 70s. Southeast winds around 5 mph, becoming southwest around 5 mph after midnight.
Sunday and sunday night   Mostly clear. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 105.
Monday   Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105.
Monday night   Partly cloudy in the evening, then clearing. Lows in the mid 70s.
Tuesday   Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105.
Tuesday night through thursday   Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105.

DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
South Dakota Becomes the Target for Heavy Rain Tonight
Posted at 11:33AM Thu Sep 17, 2026 CDT
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