S
M
T
W
T
F
S
30
81°
68°
31
91°
68°
1
90°
68°
2
88°
66°
3
82°
69°
4
85°
70°
5
82°
62°
6
82°
61°
7
80°
56°
8
77°
59°
9
84°
61°
10
78°
53°
11
81°
51°
12
79°
54°
13
70°
45°
14
66°
40°
15
75°
54°
16
74°
50°
17
69°
57°
18
63°
56°
19
64°
56°
20
69°
53°
21
63°
51°
22
N/A
23
69°
42°
24
71°
43°
25
72°
54°
26
71°
44°
27
66°
53°
28
72°
53°
29
76°
51°
30
72°
63°
1
67°
51°
2
64°
38°
3
N/A
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mauston
Mauston's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Mauston. See also: October | November | December.