S
M
T
W
T
F
S
30
75°
50°
31
73°
51°
1
79°
46°
2
75°
54°
3
67°
53°
4
61°
46°
5
51°
47°
6
59°
49°
7
56°
52°
8
71°
45°
9
76°
52°
10
62°
42°
11
56°
40°
12
52°
42°
13
58°
36°
14
58°
42°
15
49°
43°
16
66°
39°
17
71°
40°
18
71°
41°
19
73°
41°
20
76°
43°
21
80°
46°
22
73°
47°
23
68°
41°
24
69°
46°
25
75°
42°
26
56°
34°
27
57°
36°
28
60°
43°
29
66°
41°
30
63°
37°
1
61°
39°
2
55°
36°
3
53°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in High River
High River's September 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 34° and 46°. The average high for September is 62° 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 High River. See also: October | November | December.
