S
M
T
W
T
F
S
30
91°
74°
31
93°
72°
1
93°
70°
2
90°
72°
3
91°
72°
4
92°
71°
5
91°
72°
6
91°
72°
7
88°
71°
8
88°
72°
9
91°
69°
10
90°
67°
11
88°
67°
12
90°
68°
13
87°
66°
14
86°
65°
15
87°
66°
16
87°
65°
17
86°
66°
18
90°
70°
19
87°
69°
20
87°
69°
21
Hist. Avg.
86°
66°
22
Hist. Avg.
86°
66°
23
Hist. Avg.
86°
65°
24
Hist. Avg.
86°
65°
25
Hist. Avg.
85°
65°
26
Hist. Avg.
85°
64°
27
Hist. Avg.
85°
64°
28
Hist. Avg.
84°
64°
29
Hist. Avg.
84°
63°
30
Hist. Avg.
84°
63°
1
Hist. Avg.
84°
63°
2
Hist. Avg.
83°
62°
3
Hist. Avg.
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Opelousas
Opelousas's September 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 65° and 74°. 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 Opelousas. See also: October | November | December.
