S
M
T
W
T
F
S
30
67°
53°
31
69°
51°
1
76°
49°
2
75°
55°
3
66°
56°
4
65°
51°
5
55°
49°
6
60°
53°
7
61°
51°
8
68°
49°
9
71°
50°
10
62°
50°
11
52°
44°
12
54°
38°
13
65°
35°
14
56°
43°
15
56°
36°
16
64°
36°
17
71°
38°
18
69°
41°
19
74°
42°
20
74°
46°
21
77°
46°
22
68°
38°
23
64°
40°
24
65°
45°
25
58°
40°
26
49°
36°
27
55°
37°
28
57°
41°
29
66°
46°
30
53°
38°
1
54°
35°
2
50°
32°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Athabasca
Athabasca's September 2026 forecast shows daily high temperatures ranging from 49° to 68°, with overnight lows between 32° and 46°. The average high for September is 58° with an average low of 39°. 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 Athabasca. See also: October | November | December.