S
M
T
W
T
F
S
26
82°
57°
27
78°
60°
28
73°
58°
29
77°
52°
30
84°
49°
31
89°
60°
1
78°
64°
2
71°
55°
3
80°
50°
4
82°
56°
5
73°
62°
6
79°
59°
7
79°
55°
8
77°
57°
9
76°
52°
10
78°
57°
11
78°
53°
12
80°
56°
13
77°
52°
14
76°
57°
15
80°
54°
16
67°
56°
17
76°
52°
18
76°
52°
19
75°
48°
20
72°
50°
21
78°
52°
22
69°
57°
23
59°
53°
24
65°
54°
25
75°
56°
26
73°
55°
27
69°
47°
28
68°
44°
29
75°
50°
30
74°
58°
31
70°
65°
1
82°
64°
2
74°
55°
3
77°
53°
4
75°
51°
5
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sudbury
Sudbury's August 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 51° and 65°. The average high for August is 75° with an average low of 57°. 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 Sudbury. See also: September | October | November.