S
M
T
W
T
F
S
26
86°
67°
27
85°
67°
28
84°
66°
29
84°
66°
30
83°
65°
31
78°
63°
1
78°
61°
2
79°
60°
3
78°
63°
4
79°
62°
5
78°
61°
6
78°
62°
7
79°
65°
8
78°
64°
9
78°
64°
10
83°
58°
11
81°
59°
12
84°
62°
13
81°
63°
14
82°
64°
15
84°
63°
16
85°
63°
17
85°
64°
18
84°
63°
19
84°
59°
20
82°
56°
21
78°
56°
22
77°
55°
23
77°
54°
24
78°
56°
25
79°
55°
26
83°
55°
27
83°
56°
28
79°
60°
29
78°
58°
30
78°
56°
31
81°
60°
1
81°
52°
2
82°
53°
3
74°
52°
4
75°
54°
5
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Foxboro
Foxboro's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 52° and 67°. The average high for August is 80° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Foxboro. See also: September | October | November.