S
M
T
W
T
F
S
30
64°
49°
31
66°
53°
1
65°
55°
2
64°
54°
3
65°
53°
4
65°
53°
5
67°
51°
6
63°
52°
7
67°
54°
8
67°
53°
9
66°
53°
10
66°
52°
11
65°
54°
12
67°
52°
13
66°
48°
14
65°
51°
15
60°
50°
16
64°
44°
17
65°
43°
18
57°
47°
19
58°
49°
20
62°
49°
21
63°
50°
22
64°
47°
23
58°
43°
24
60°
43°
25
Hist. Avg.
60°
45°
26
Hist. Avg.
59°
45°
27
Hist. Avg.
59°
44°
28
Hist. Avg.
59°
44°
29
Hist. Avg.
59°
44°
30
Hist. Avg.
59°
44°
1
Hist. Avg.
59°
43°
2
Hist. Avg.
58°
43°
3
Hist. Avg.
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fox Island River
Fox Island River's September 2026 forecast shows daily high temperatures ranging from 57° to 67°, with overnight lows between 43° and 55°. The average high for September is 64° with an average low of 50°. 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 Fox Island River. See also: October | November | December.