S
M
T
W
T
F
S
26
78°
63°
27
82°
60°
28
76°
58°
29
80°
55°
30
87°
57°
31
84°
66°
1
77°
64°
2
78°
57°
3
79°
52°
4
83°
57°
5
75°
58°
6
80°
53°
7
82°
58°
8
73°
55°
9
75°
54°
10
78°
58°
11
80°
52°
12
80°
57°
13
80°
56°
14
80°
55°
15
80°
55°
16
72°
59°
17
75°
57°
18
74°
54°
19
71°
48°
20
77°
47°
21
70°
61°
22
68°
60°
23
62°
57°
24
67°
54°
25
76°
50°
26
67°
58°
27
68°
52°
28
70°
49°
29
77°
54°
30
69°
63°
31
68°
64°
1
81°
66°
2
77°
59°
3
77°
56°
4
72°
56°
5
77°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sault Ste. Marie
Sault Ste. Marie's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Sault Ste. Marie. See also: September | October | November.