S
M
T
W
T
F
S
30
95°
75°
31
97°
76°
1
80°
75°
2
87°
77°
3
88°
76°
4
90°
75°
5
90°
74°
6
92°
73°
7
94°
74°
8
92°
76°
9
88°
75°
10
90°
74°
11
92°
73°
12
93°
73°
13
94°
74°
14
92°
73°
15
95°
72°
16
92°
70°
17
91°
67°
18
90°
69°
19
89°
64°
20
87°
62°
21
85°
63°
22
87°
65°
23
87°
63°
24
86°
62°
25
87°
66°
26
87°
65°
27
83°
66°
28
84°
65°
29
85°
65°
30
87°
64°
1
86°
65°
2
84°
64°
3
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buna
Buna's September 2026 forecast shows daily high temperatures ranging from 83° to 95°, with overnight lows between 62° and 74°. The average high for September is 88° with an average low of 67°. 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 Buna. See also: October | November | December.