S
M
T
W
T
F
S
30
73°
48°
31
63°
44°
1
69°
48°
2
72°
46°
3
69°
45°
4
71°
49°
5
72°
43°
6
67°
38°
7
61°
37°
8
61°
36°
9
60°
36°
10
60°
37°
11
61°
36°
12
66°
39°
13
67°
38°
14
65°
43°
15
62°
37°
16
58°
33°
17
58°
34°
18
59°
36°
19
60°
40°
20
67°
43°
21
67°
42°
22
61°
33°
23
57°
36°
24
56°
35°
25
56°
39°
26
59°
38°
27
61°
40°
28
55°
36°
29
54°
34°
30
54°
38°
1
53°
39°
2
59°
28°
3
52°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nisku
Nisku's September 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 27° and 49°. 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 Nisku. See also: October | November | December.