S
M
T
W
T
F
S
30
93°
61°
31
97°
64°
1
97°
68°
2
95°
70°
3
95°
70°
4
99°
72°
5
100°
72°
6
100°
72°
7
95°
70°
8
100°
64°
9
99°
70°
10
95°
70°
11
84°
70°
12
92°
69°
13
91°
69°
14
93°
70°
15
93°
69°
16
94°
70°
17
97°
69°
18
96°
68°
19
92°
64°
20
84°
63°
21
78°
60°
22
79°
57°
23
84°
61°
24
85°
59°
25
79°
56°
26
84°
63°
27
84°
62°
28
83°
62°
29
82°
61°
30
83°
62°
1
83°
62°
2
82°
61°
3
83°
61°
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 78° to 97°, with overnight lows between 56° and 70°. The average high for September is 86° with an average low of 64°. 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.
