S
M
T
W
T
F
S
30
88°
66°
31
94°
69°
1
94°
68°
2
97°
70°
3
97°
71°
4
98°
73°
5
92°
70°
6
81°
70°
7
83°
66°
8
87°
59°
9
90°
62°
10
93°
73°
11
87°
72°
12
81°
71°
13
89°
70°
14
87°
67°
15
80°
59°
16
88°
59°
17
94°
63°
18
87°
73°
19
85°
69°
20
90°
69°
21
84°
69°
22
72°
59°
23
59°
55°
24
68°
50°
25
76°
43°
26
78°
47°
27
75°
56°
28
74°
62°
29
78°
57°
30
83°
58°
1
87°
57°
2
90°
60°
3
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buchanan
Buchanan's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Buchanan. See also: October | November | December.