S
M
T
W
T
F
S
30
71°
48°
31
78°
48°
1
89°
50°
2
86°
52°
3
80°
53°
4
75°
47°
5
68°
51°
6
62°
55°
7
62°
54°
8
71°
53°
9
78°
50°
10
73°
51°
11
61°
42°
12
60°
37°
13
69°
40°
14
59°
41°
15
54°
40°
16
63°
41°
17
75°
48°
18
74°
44°
19
73°
46°
20
77°
51°
21
78°
50°
22
74°
47°
23
74°
47°
24
73°
50°
25
69°
46°
26
64°
45°
27
65°
42°
28
64°
44°
29
72°
40°
30
59°
44°
1
57°
43°
2
63°
44°
3
68°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Medicine Hat
Medicine Hat's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 40° and 51°. The average high for September is 69° with an average low of 45°. 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 Medicine Hat. See also: October | November | December.