S
M
T
W
T
F
S
30
66°
44°
31
71°
46°
1
71°
45°
2
70°
46°
3
71°
44°
4
69°
41°
5
68°
35°
6
62°
43°
7
64°
43°
8
68°
44°
9
69°
45°
10
69°
43°
11
67°
42°
12
65°
44°
13
67°
43°
14
68°
44°
15
67°
42°
16
67°
37°
17
57°
35°
18
57°
38°
19
55°
31°
20
63°
37°
21
66°
40°
22
66°
41°
23
Hist. Avg.
60°
38°
24
Hist. Avg.
60°
38°
25
Hist. Avg.
60°
38°
26
Hist. Avg.
60°
38°
27
Hist. Avg.
59°
37°
28
Hist. Avg.
59°
37°
29
Hist. Avg.
59°
37°
30
Hist. Avg.
58°
37°
1
Hist. Avg.
58°
37°
2
Hist. Avg.
58°
36°
3
Hist. Avg.
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Banff
Banff's September 2026 forecast shows daily high temperatures ranging from 55° to 71°, with overnight lows between 31° and 46°. The average high for September is 66° with an average low of 41°. 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 Banff. See also: October | November | December.
