S
M
T
W
T
F
S
30
92°
71°
31
92°
71°
1
91°
70°
2
92°
71°
3
92°
71°
4
91°
70°
5
91°
69°
6
90°
70°
7
89°
67°
8
90°
67°
9
90°
66°
10
91°
65°
11
91°
67°
12
90°
66°
13
91°
67°
14
90°
66°
15
87°
66°
16
89°
65°
17
90°
65°
18
85°
64°
19
85°
64°
20
86°
65°
21
89°
65°
22
84°
64°
23
84°
64°
24
85°
63°
25
82°
63°
26
84°
62°
27
81°
63°
28
81°
62°
29
82°
62°
30
81°
60°
1
80°
61°
2
79°
60°
3
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alberta
Alberta's September 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 60° and 71°. The average high for September is 87° with an average low of 65°. 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 Alberta. See also: October | November | December.
