S
M
T
W
T
F
S
30
88°
71°
31
90°
71°
1
93°
71°
2
96°
74°
3
93°
75°
4
93°
75°
5
91°
73°
6
82°
72°
7
82°
70°
8
86°
60°
9
86°
64°
10
90°
68°
11
93°
73°
12
87°
75°
13
89°
72°
14
90°
68°
15
85°
66°
16
85°
66°
17
86°
67°
18
87°
69°
19
85°
66°
20
80°
64°
21
76°
62°
22
78°
63°
23
76°
62°
24
80°
67°
25
79°
65°
26
77°
64°
27
77°
62°
28
82°
65°
29
81°
65°
30
79°
64°
1
82°
65°
2
81°
64°
3
81°
64°
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 76° to 93°, with overnight lows between 62° and 75°. The average high for September is 82° 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.
