S
M
T
W
T
F
S
30
64°
37°
31
64°
39°
1
66°
42°
2
66°
41°
3
67°
42°
4
69°
36°
5
63°
33°
6
61°
32°
7
62°
35°
8
63°
36°
9
61°
37°
10
63°
36°
11
61°
32°
12
59°
32°
13
66°
37°
14
65°
37°
15
Hist. Avg.
65°
33°
16
Hist. Avg.
64°
32°
17
Hist. Avg.
64°
32°
18
Hist. Avg.
64°
32°
19
Hist. Avg.
64°
31°
20
Hist. Avg.
63°
31°
21
Hist. Avg.
63°
31°
22
Hist. Avg.
63°
31°
23
Hist. Avg.
62°
30°
24
Hist. Avg.
62°
30°
25
Hist. Avg.
62°
30°
26
Hist. Avg.
62°
29°
27
Hist. Avg.
61°
29°
28
Hist. Avg.
61°
29°
29
Hist. Avg.
61°
28°
30
Hist. Avg.
60°
28°
1
Hist. Avg.
60°
28°
2
Hist. Avg.
60°
28°
3
Hist. Avg.
59°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sundre
Sundre's September 2026 forecast shows daily high temperatures ranging from 59° to 69°, with overnight lows between 32° and 42°. The average high for September is 64° with an average low of 37°. 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 Sundre. See also: October | November | December.