S
M
T
W
T
F
S
30
82°
55°
31
76°
61°
1
70°
60°
2
74°
59°
3
74°
63°
4
84°
58°
5
76°
55°
6
69°
52°
7
75°
56°
8
73°
52°
9
72°
53°
10
73°
57°
11
75°
57°
12
73°
56°
13
74°
52°
14
72°
53°
15
70°
55°
16
72°
56°
17
75°
55°
18
68°
51°
19
68°
53°
20
70°
54°
21
74°
55°
22
75°
56°
23
75°
55°
24
74°
54°
25
73°
53°
26
73°
53°
27
74°
54°
28
73°
53°
29
72°
51°
30
65°
47°
1
63°
48°
2
62°
51°
3
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Foxboro
Foxboro's September 2026 forecast shows daily high temperatures ranging from 62° to 84°, with overnight lows between 47° and 63°. The average high for September is 72° with an average low of 54°. 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 Foxboro. See also: October | November | December.
