S
M
T
W
T
F
S
26
79°
46°
27
85°
47°
28
84°
63°
29
71°
65°
30
76°
62°
31
82°
58°
1
87°
62°
2
86°
69°
3
79°
65°
4
85°
60°
5
88°
59°
6
91°
69°
7
91°
71°
8
90°
70°
9
89°
65°
10
85°
61°
11
86°
60°
12
83°
60°
13
84°
65°
14
83°
55°
15
83°
56°
16
83°
61°
17
82°
58°
18
81°
57°
19
85°
58°
20
84°
59°
21
83°
58°
22
81°
58°
23
81°
57°
24
82°
56°
25
79°
59°
26
81°
60°
27
85°
60°
28
86°
59°
29
82°
55°
30
78°
52°
31
77°
52°
1
77°
53°
2
78°
56°
3
77°
54°
4
78°
56°
5
77°
57°
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 77° to 86°, with overnight lows between 52° and 65°. The average high for August is 81° 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.