S
M
T
W
T
F
S
26
81°
62°
27
81°
63°
28
80°
62°
29
80°
60°
30
72°
58°
31
72°
57°
1
73°
59°
2
75°
60°
3
76°
61°
4
78°
60°
5
78°
60°
6
77°
60°
7
75°
59°
8
74°
60°
9
76°
60°
10
77°
58°
11
78°
60°
12
78°
60°
13
80°
56°
14
79°
52°
15
74°
59°
16
78°
54°
17
77°
50°
18
70°
48°
19
67°
49°
20
68°
49°
21
70°
50°
22
71°
50°
23
74°
52°
24
75°
51°
25
75°
55°
26
76°
56°
27
76°
52°
28
69°
52°
29
70°
54°
30
74°
56°
31
74°
45°
1
71°
44°
2
65°
47°
3
68°
53°
4
70°
54°
5
73°
44°
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 81°, with overnight lows between 44° and 63°. The average high for August is 74° with an average low of 55°. 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.