S
M
T
W
T
F
S
30
56°
35°
31
56°
43°
1
54°
40°
2
50°
37°
3
52°
31°
4
46°
40°
5
44°
40°
6
55°
41°
7
54°
38°
8
52°
38°
9
54°
47°
10
56°
43°
11
55°
49°
12
54°
48°
13
56°
42°
14
55°
29°
15
47°
28°
16
51°
40°
17
52°
44°
18
55°
37°
19
51°
36°
20
54°
35°
21
43°
37°
22
43°
30°
23
45°
33°
24
48°
29°
25
49°
26°
26
53°
27°
27
54°
33°
28
50°
42°
29
46°
34°
30
41°
34°
1
41°
24°
2
33°
17°
3
34°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Birch Creek
Birch Creek's September 2026 forecast shows daily high temperatures ranging from 33° to 54°, with overnight lows between 17° and 42°. The average high for September is 43° with an average low of 29°. 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 Creek. See also: October | November | December.