S
M
T
W
T
F
S
26
82°
60°
27
85°
59°
28
81°
57°
29
79°
56°
30
85°
59°
31
80°
55°
1
84°
60°
2
86°
60°
3
81°
53°
4
80°
52°
5
79°
53°
6
79°
53°
7
85°
54°
8
81°
53°
9
82°
55°
10
85°
58°
11
85°
54°
12
83°
58°
13
85°
61°
14
87°
61°
15
81°
59°
16
85°
51°
17
78°
51°
18
77°
52°
19
78°
52°
20
76°
53°
21
76°
51°
22
75°
57°
23
77°
60°
24
83°
58°
25
85°
52°
26
85°
48°
27
76°
49°
28
75°
49°
29
74°
50°
30
75°
56°
31
79°
58°
1
83°
57°
2
83°
55°
3
78°
49°
4
81°
55°
5
81°
50°
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 74° to 87°, with overnight lows between 48° and 61°. The average high for August is 81° 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.