S
M
T
W
T
F
S
30
79°
59°
31
80°
50°
1
73°
50°
2
72°
55°
3
71°
59°
4
77°
52°
5
80°
48°
6
72°
48°
7
70°
50°
8
70°
56°
9
71°
55°
10
70°
54°
11
69°
50°
12
69°
48°
13
68°
45°
14
66°
47°
15
67°
52°
16
66°
56°
17
70°
55°
18
75°
55°
19
75°
52°
20
71°
49°
21
72°
48°
22
67°
45°
23
62°
44°
24
64°
43°
25
64°
44°
26
Hist. Avg.
66°
46°
27
Hist. Avg.
65°
45°
28
Hist. Avg.
65°
45°
29
Hist. Avg.
64°
44°
30
Hist. Avg.
64°
44°
1
Hist. Avg.
64°
44°
2
Hist. Avg.
63°
43°
3
Hist. Avg.
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Apple River
Apple River's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 43° and 59°. The average high for September is 71° with an average low of 51°. 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 Apple River. See also: October | November | December.
