S
M
T
W
T
F
S
30
95°
72°
31
94°
73°
1
84°
76°
2
91°
76°
3
94°
74°
4
92°
73°
5
92°
72°
6
91°
72°
7
93°
74°
8
94°
72°
9
93°
74°
10
91°
72°
11
88°
72°
12
88°
73°
13
88°
73°
14
90°
72°
15
91°
71°
16
92°
72°
17
92°
71°
18
89°
70°
19
89°
66°
20
88°
67°
21
85°
66°
22
88°
65°
23
87°
66°
24
90°
70°
25
89°
69°
26
88°
69°
27
87°
68°
28
88°
68°
29
88°
67°
30
87°
69°
1
88°
68°
2
87°
67°
3
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Barre
Port Barre's September 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 65° and 73°. The average high for September is 89° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Port Barre. See also: October | November | December.
