S
M
T
W
T
F
S
30
67°
49°
31
73°
50°
1
80°
40°
2
74°
46°
3
67°
45°
4
62°
37°
5
54°
47°
6
58°
48°
7
60°
51°
8
73°
45°
9
77°
40°
10
63°
41°
11
56°
38°
12
55°
33°
13
64°
32°
14
59°
44°
15
54°
36°
16
69°
28°
17
73°
31°
18
74°
32°
19
76°
37°
20
79°
38°
21
82°
36°
22
66°
35°
23
62°
36°
24
65°
47°
25
71°
38°
26
52°
32°
27
59°
32°
28
62°
34°
29
66°
37°
30
65°
40°
1
59°
35°
2
54°
32°
3
53°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blackfalds
Blackfalds's September 2026 forecast shows daily high temperatures ranging from 52° to 71°, with overnight lows between 32° and 47°. The average high for September is 61° with an average low of 36°. 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 Blackfalds. See also: October | November | December.
