S
M
T
W
T
F
S
30
66°
49°
31
73°
48°
1
66°
47°
2
73°
49°
3
73°
50°
4
74°
49°
5
75°
48°
6
74°
37°
7
69°
37°
8
59°
39°
9
59°
41°
10
60°
44°
11
61°
46°
12
67°
45°
13
70°
44°
14
69°
39°
15
59°
35°
16
58°
32°
17
Hist. Avg.
66°
40°
18
Hist. Avg.
65°
40°
19
Hist. Avg.
65°
40°
20
Hist. Avg.
65°
39°
21
Hist. Avg.
64°
39°
22
Hist. Avg.
64°
39°
23
Hist. Avg.
63°
38°
24
Hist. Avg.
63°
38°
25
Hist. Avg.
62°
38°
26
Hist. Avg.
62°
38°
27
Hist. Avg.
61°
37°
28
Hist. Avg.
61°
37°
29
Hist. Avg.
60°
37°
30
Hist. Avg.
60°
36°
1
Hist. Avg.
59°
36°
2
Hist. Avg.
59°
36°
3
Hist. Avg.
58°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Birch River
Birch River's September 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 32° and 50°. The average high for September is 67° with an average low of 43°. 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 Birch River. See also: October | November | December.