S
M
T
W
T
F
S
30
84°
62°
31
84°
67°
1
86°
67°
2
83°
60°
3
82°
57°
4
80°
58°
5
81°
58°
6
82°
62°
7
84°
64°
8
84°
65°
9
87°
65°
10
84°
58°
11
82°
60°
12
82°
64°
13
84°
56°
14
80°
55°
15
78°
55°
16
80°
56°
17
79°
55°
18
80°
57°
19
84°
58°
20
83°
57°
21
84°
61°
22
84°
61°
23
76°
60°
24
79°
60°
25
78°
59°
26
82°
59°
27
82°
58°
28
81°
58°
29
82°
57°
30
82°
58°
1
81°
58°
2
82°
50°
3
81°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fairfield Bay
Fairfield Bay's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 49° and 67°. The average high for September is 82° with an average low of 59°. 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 Fairfield Bay. See also: October | November | December.
