S
M
T
W
T
F
S
30
77°
62°
31
85°
65°
1
86°
65°
2
83°
64°
3
77°
65°
4
77°
65°
5
75°
59°
6
76°
56°
7
76°
49°
8
72°
58°
9
83°
57°
10
77°
53°
11
80°
54°
12
79°
52°
13
69°
45°
14
66°
39°
15
75°
53°
16
73°
50°
17
66°
56°
18
64°
55°
19
64°
56°
20
68°
52°
21
61°
49°
22
65°
45°
23
68°
41°
24
N/A
25
69°
50°
26
70°
43°
27
69°
51°
28
73°
49°
29
73°
57°
30
66°
60°
1
68°
44°
2
66°
44°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Baraboo
Baraboo's September 2026 forecast shows daily high temperatures ranging from 66° to 73°, with overnight lows between 44° and 60°. The average high for September is 69° with an average low of 51°. 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 Baraboo. See also: October | November | December.
