S
M
T
W
T
F
S
30
77°
64°
31
88°
63°
1
84°
54°
2
87°
64°
3
84°
65°
4
88°
68°
5
83°
67°
6
85°
65°
7
83°
65°
8
80°
65°
9
80°
56°
10
79°
49°
11
84°
59°
12
75°
50°
13
71°
45°
14
66°
40°
15
71°
48°
16
74°
43°
17
71°
53°
18
63°
54°
19
65°
57°
20
70°
51°
21
64°
46°
22
67°
41°
23
68°
46°
24
65°
49°
25
68°
50°
26
63°
52°
27
65°
52°
28
69°
54°
29
64°
46°
30
63°
46°
1
64°
45°
2
62°
48°
3
66°
45°
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 62° to 69°, with overnight lows between 45° and 54°. 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 Birchwood. See also: October | November | December.