S
M
T
W
T
F
S
30
82°
59°
31
78°
55°
1
76°
60°
2
75°
61°
3
80°
53°
4
76°
57°
5
75°
62°
6
79°
60°
7
84°
61°
8
83°
60°
9
82°
59°
10
80°
58°
11
75°
58°
12
73°
60°
13
82°
57°
14
71°
49°
15
71°
48°
16
Hist. Avg.
74°
53°
17
Hist. Avg.
74°
53°
18
Hist. Avg.
74°
52°
19
Hist. Avg.
73°
52°
20
Hist. Avg.
73°
51°
21
Hist. Avg.
73°
51°
22
Hist. Avg.
72°
51°
23
Hist. Avg.
72°
50°
24
Hist. Avg.
72°
50°
25
Hist. Avg.
71°
50°
26
Hist. Avg.
71°
49°
27
Hist. Avg.
70°
49°
28
Hist. Avg.
70°
48°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
69°
48°
1
Hist. Avg.
68°
47°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Buchanan
Buchanan's September 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 48° and 62°. The average high for September is 78° with an average low of 57°. 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.