S
M
T
W
T
F
S
26
82°
56°
27
79°
61°
28
75°
54°
29
79°
51°
30
85°
56°
31
87°
64°
1
78°
61°
2
75°
55°
3
81°
59°
4
82°
60°
5
78°
58°
6
74°
57°
7
76°
57°
8
76°
58°
9
77°
55°
10
78°
60°
11
77°
60°
12
77°
59°
13
78°
59°
14
73°
58°
15
75°
60°
16
77°
60°
17
77°
59°
18
72°
58°
19
72°
59°
20
75°
58°
21
70°
58°
22
72°
59°
23
76°
56°
24
73°
53°
25
68°
57°
26
73°
58°
27
75°
57°
28
74°
58°
29
74°
56°
30
67°
54°
31
65°
52°
1
65°
55°
2
66°
54°
3
68°
55°
4
71°
56°
5
72°
55°
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 87°, with overnight lows between 51° and 64°. 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.