S
M
T
W
T
F
S
30
80°
61°
31
80°
62°
1
79°
63°
2
80°
61°
3
80°
54°
4
72°
51°
5
71°
56°
6
72°
61°
7
78°
61°
8
79°
60°
9
78°
58°
10
73°
59°
11
76°
58°
12
76°
60°
13
77°
60°
14
77°
59°
15
76°
57°
16
76°
52°
17
70°
56°
18
75°
51°
19
70°
49°
20
68°
47°
21
63°
46°
22
64°
55°
23
66°
51°
24
65°
47°
25
63°
46°
26
64°
51°
27
67°
54°
28
71°
53°
29
70°
51°
30
67°
52°
1
62°
49°
2
65°
44°
3
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fair Haven
Fair Haven's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 44° and 63°. The average high for September is 72° 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 Fair Haven. See also: October | November | December.