S
M
T
W
T
F
S
30
89°
70°
31
88°
71°
1
84°
70°
2
85°
71°
3
88°
71°
4
88°
70°
5
87°
71°
6
87°
70°
7
86°
70°
8
83°
67°
9
83°
65°
10
82°
64°
11
81°
65°
12
85°
64°
13
85°
69°
14
86°
64°
15
82°
62°
16
81°
64°
17
80°
63°
18
82°
65°
19
85°
66°
20
85°
65°
21
84°
67°
22
85°
65°
23
84°
61°
24
80°
60°
25
80°
60°
26
78°
62°
27
83°
64°
28
82°
64°
29
83°
63°
30
83°
60°
1
80°
63°
2
82°
64°
3
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fairfield Harbour
Fairfield Harbour's September 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 60° and 71°. The average high for September is 84° with an average low of 66°. 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 Harbour. See also: October | November | December.
