S
M
T
W
T
F
S
30
73°
56°
31
72°
53°
1
73°
48°
2
72°
47°
3
70°
47°
4
71°
48°
5
71°
48°
6
73°
54°
7
73°
53°
8
70°
53°
9
73°
52°
10
75°
50°
11
74°
53°
12
74°
53°
13
75°
52°
14
76°
52°
15
74°
45°
16
73°
46°
17
68°
51°
18
67°
52°
19
74°
51°
20
72°
49°
21
73°
42°
22
71°
41°
23
70°
48°
24
67°
50°
25
66°
46°
26
Hist. Avg.
66°
44°
27
Hist. Avg.
66°
44°
28
Hist. Avg.
66°
44°
29
Hist. Avg.
65°
43°
30
Hist. Avg.
65°
43°
1
Hist. Avg.
64°
43°
2
Hist. Avg.
64°
42°
3
Hist. Avg.
64°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Foster Brook
Foster Brook's September 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 41° and 56°. The average high for September is 72° with an average low of 50°. 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 Foster Brook. See also: October | November | December.
