S
M
T
W
T
F
S
30
77°
67°
31
75°
59°
1
74°
57°
2
72°
57°
3
72°
65°
4
76°
63°
5
73°
63°
6
75°
65°
7
72°
67°
8
72°
57°
9
71°
55°
10
81°
52°
11
70°
55°
12
58°
46°
13
62°
42°
14
58°
46°
15
57°
42°
16
58°
44°
17
62°
43°
18
67°
52°
19
67°
50°
20
69°
48°
21
69°
51°
22
69°
52°
23
65°
51°
24
71°
53°
25
70°
51°
26
70°
55°
27
69°
50°
28
64°
46°
29
60°
38°
30
64°
44°
1
64°
44°
2
55°
43°
3
61°
43°
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 55° to 71°, with overnight lows between 38° and 55°. The average high for September is 65° with an average low of 48°. 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.