S
M
T
W
T
F
S
30
68°
44°
31
70°
46°
1
75°
45°
2
70°
43°
3
68°
44°
4
71°
46°
5
70°
49°
6
70°
43°
7
71°
48°
8
74°
49°
9
75°
49°
10
74°
48°
11
74°
50°
12
72°
48°
13
73°
49°
14
73°
49°
15
74°
48°
16
73°
37°
17
71°
35°
18
61°
36°
19
57°
36°
20
60°
37°
21
Hist. Avg.
63°
38°
22
Hist. Avg.
62°
37°
23
Hist. Avg.
62°
37°
24
Hist. Avg.
61°
37°
25
Hist. Avg.
61°
36°
26
Hist. Avg.
61°
36°
27
Hist. Avg.
60°
36°
28
Hist. Avg.
60°
35°
29
Hist. Avg.
60°
35°
30
Hist. Avg.
59°
34°
1
Hist. Avg.
59°
34°
2
Hist. Avg.
58°
34°
3
Hist. Avg.
58°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mount Royal
Mount Royal's September 2026 forecast shows daily high temperatures ranging from 57° to 75°, with overnight lows between 35° and 50°. The average high for September is 70° 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 Mount Royal. See also: October | November | December.
