S
M
T
W
T
F
S
30
69°
46°
31
70°
46°
1
70°
48°
2
69°
47°
3
69°
47°
4
68°
46°
5
68°
48°
6
67°
48°
7
75°
43°
8
68°
38°
9
69°
38°
10
68°
43°
11
70°
45°
12
71°
43°
13
70°
45°
14
70°
43°
15
69°
44°
16
67°
42°
17
67°
41°
18
68°
44°
19
69°
44°
20
73°
43°
21
73°
43°
22
72°
42°
23
72°
44°
24
71°
44°
25
72°
41°
26
70°
44°
27
71°
43°
28
70°
41°
29
69°
42°
30
70°
39°
1
67°
41°
2
65°
39°
3
65°
39°
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 65° to 75°, with overnight lows between 38° and 48°. The average high for September is 69° with an average low of 43°. 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.