S
M
T
W
T
F
S
30
59°
42°
31
54°
39°
1
60°
34°
2
62°
36°
3
65°
40°
4
65°
47°
5
66°
51°
6
59°
47°
7
57°
50°
8
57°
48°
9
63°
44°
10
62°
43°
11
61°
41°
12
61°
48°
13
63°
41°
14
59°
39°
15
54°
48°
16
59°
46°
17
59°
38°
18
51°
46°
19
57°
41°
20
55°
46°
21
53°
39°
22
53°
38°
23
52°
39°
24
54°
42°
25
55°
41°
26
54°
42°
27
51°
41°
28
52°
40°
29
53°
40°
30
51°
38°
1
50°
39°
2
51°
38°
3
43°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Birchwood
Birchwood's September 2026 forecast shows daily high temperatures ranging from 43° to 57°, with overnight lows between 28° and 46°. The average high for September is 52° with an average low of 39°. 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 Birchwood. See also: October | November | December.