S
M
T
W
T
F
S
30
79°
69°
31
86°
72°
1
90°
71°
2
83°
71°
3
85°
70°
4
91°
69°
5
83°
67°
6
81°
64°
7
81°
60°
8
80°
64°
9
85°
61°
10
80°
55°
11
80°
55°
12
80°
55°
13
69°
45°
14
68°
64°
15
73°
56°
16
65°
57°
17
71°
58°
18
71°
58°
19
69°
55°
20
72°
51°
21
68°
49°
22
68°
53°
23
69°
54°
24
71°
54°
25
74°
55°
26
71°
48°
27
76°
55°
28
74°
54°
29
70°
55°
30
71°
53°
1
73°
52°
2
71°
51°
3
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prairie du Chien
Prairie du Chien's September 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 45° and 64°. The average high for September is 71° with an average low of 54°. 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 Prairie du Chien. See also: October | November | December.
