S
M
T
W
T
F
S
30
79°
57°
31
78°
57°
1
79°
56°
2
75°
54°
3
74°
54°
4
76°
55°
5
80°
55°
6
77°
53°
7
67°
51°
8
72°
52°
9
71°
53°
10
78°
53°
11
68°
51°
12
66°
49°
13
63°
43°
14
74°
50°
15
73°
51°
16
76°
49°
17
75°
48°
18
75°
48°
19
74°
47°
20
75°
47°
21
74°
46°
22
72°
47°
23
73°
47°
24
75°
45°
25
72°
44°
26
70°
45°
27
71°
46°
28
72°
45°
29
69°
40°
30
62°
43°
1
66°
43°
2
59°
37°
3
62°
40°
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 59° to 80°, with overnight lows between 37° and 57°. The average high for September is 72° with an average low of 49°. 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.