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
93°
72°
6
84°
71°
7
85°
69°
8
84°
62°
9
86°
63°
10
90°
68°
11
94°
75°
12
91°
76°
13
88°
73°
14
91°
65°
15
83°
63°
16
83°
66°
17
86°
67°
18
87°
69°
19
85°
70°
20
84°
67°
21
80°
68°
22
79°
67°
23
79°
67°
24
80°
64°
25
79°
62°
26
80°
70°
27
77°
62°
28
81°
65°
29
80°
65°
30
80°
62°
1
76°
60°
2
76°
64°
3
82°
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 91°, with overnight lows between 60° and 73°. 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.
