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°
53°
25
75°
55°
26
73°
60°
27
68°
46°
28
66°
45°
29
71°
56°
30
70°
57°
31
71°
55°
1
67°
53°
2
67°
51°
3
69°
52°
4
69°
50°
5
68°
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 66° to 75°, with overnight lows between 45° and 60°. The average high for August is 70° with an average low of 53°. 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.