S
M
T
W
T
F
S
30
78°
58°
31
77°
58°
1
77°
55°
2
68°
51°
3
67°
56°
4
74°
58°
5
78°
58°
6
77°
57°
7
77°
57°
8
76°
56°
9
73°
55°
10
72°
56°
11
67°
51°
12
67°
49°
13
66°
48°
14
72°
47°
15
68°
42°
16
64°
41°
17
61°
42°
18
61°
38°
19
62°
42°
20
62°
48°
21
66°
51°
22
71°
53°
23
71°
53°
24
70°
51°
25
73°
50°
26
72°
48°
27
72°
41°
28
61°
46°
29
65°
38°
30
58°
47°
1
68°
36°
2
61°
34°
3
54°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bayfield
Bayfield's September 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 34° and 58°. The average high for September is 69° with an average low of 49°. 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 Bayfield. See also: October | November | December.