S
M
T
W
T
F
S
30
75°
57°
31
75°
58°
1
74°
58°
2
75°
50°
3
74°
48°
4
65°
51°
5
65°
57°
6
67°
55°
7
73°
51°
8
69°
50°
9
65°
49°
10
69°
54°
11
71°
56°
12
72°
56°
13
72°
54°
14
71°
50°
15
70°
46°
16
62°
47°
17
65°
47°
18
61°
45°
19
65°
42°
20
60°
41°
21
57°
43°
22
58°
50°
23
61°
47°
24
61°
42°
25
58°
45°
26
60°
50°
27
64°
47°
28
65°
40°
29
63°
41°
30
56°
46°
1
58°
43°
2
61°
44°
3
55°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Key River
Key River's September 2026 forecast shows daily high temperatures ranging from 55° to 75°, with overnight lows between 36° and 58°. The average high for September is 65° with an average low of 48°. 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 Key River. See also: October | November | December.
