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
77°
54°
18
75°
51°
19
74°
46°
20
73°
51°
21
74°
57°
22
69°
53°
23
68°
52°
24
71°
50°
25
73°
54°
26
72°
52°
27
67°
53°
28
68°
53°
29
68°
54°
30
69°
51°
31
65°
52°
1
66°
55°
2
70°
56°
3
65°
55°
4
67°
55°
5
65°
54°
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 65° to 77°, with overnight lows between 46° and 57°. 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.