S
M
T
W
T
F
S
26
77°
60°
27
73°
59°
28
75°
61°
29
80°
61°
30
80°
60°
31
79°
62°
1
80°
60°
2
79°
61°
3
79°
60°
4
78°
59°
5
77°
60°
6
78°
61°
7
77°
59°
8
71°
58°
9
71°
59°
10
75°
60°
11
72°
59°
12
74°
59°
13
77°
61°
14
78°
60°
15
78°
58°
16
71°
55°
17
72°
51°
18
73°
58°
19
77°
58°
20
74°
57°
21
76°
55°
22
73°
51°
23
73°
52°
24
74°
52°
25
75°
53°
26
76°
54°
27
76°
52°
28
75°
56°
29
75°
56°
30
74°
55°
31
75°
56°
1
75°
56°
2
74°
48°
3
73°
45°
4
64°
48°
5
64°
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 64° to 80°, with overnight lows between 45° and 62°. 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.