S
M
T
W
T
F
S
30
60°
47°
31
75°
49°
1
85°
44°
2
79°
55°
3
67°
46°
4
67°
42°
5
53°
48°
6
61°
47°
7
53°
46°
8
64°
51°
9
71°
56°
10
73°
48°
11
58°
46°
12
58°
38°
13
55°
36°
14
52°
42°
15
48°
42°
16
66°
44°
17
73°
35°
18
70°
40°
19
72°
40°
20
77°
44°
21
79°
42°
22
77°
46°
23
70°
45°
24
75°
39°
25
77°
45°
26
55°
32°
27
59°
33°
28
64°
44°
29
62°
45°
30
61°
37°
1
59°
39°
2
56°
36°
3
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cardston
Cardston's September 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 32° and 45°. The average high for September is 61° 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 Cardston. See also: October | November | December.
