S
M
T
W
T
F
S
30
76°
56°
31
76°
54°
1
69°
49°
2
65°
46°
3
69°
54°
4
76°
55°
5
78°
55°
6
77°
56°
7
77°
55°
8
73°
54°
9
71°
54°
10
72°
53°
11
68°
42°
12
68°
49°
13
71°
45°
14
72°
42°
15
68°
40°
16
62°
35°
17
60°
34°
18
60°
36°
19
61°
46°
20
67°
48°
21
70°
47°
22
72°
48°
23
69°
50°
24
71°
47°
25
71°
43°
26
67°
36°
27
58°
45°
28
63°
39°
29
64°
44°
30
60°
38°
1
65°
31°
2
52°
27°
3
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Peguis
Peguis's September 2026 forecast shows daily high temperatures ranging from 50° to 78°, with overnight lows between 27° and 56°. The average high for September is 68° 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 Peguis. See also: October | November | December.