S
M
T
W
T
F
S
26
80°
58°
27
74°
61°
28
74°
57°
29
75°
62°
30
76°
58°
31
76°
63°
1
82°
63°
2
82°
62°
3
76°
58°
4
74°
55°
5
75°
62°
6
80°
61°
7
75°
58°
8
73°
60°
9
74°
57°
10
74°
58°
11
77°
61°
12
80°
60°
13
74°
56°
14
74°
55°
15
77°
60°
16
77°
60°
17
82°
61°
18
82°
61°
19
81°
60°
20
77°
59°
21
74°
59°
22
80°
60°
23
82°
59°
24
80°
57°
25
83°
49°
26
76°
48°
27
71°
47°
28
72°
54°
29
77°
56°
30
81°
55°
31
81°
45°
1
76°
44°
2
66°
43°
3
66°
43°
4
67°
45°
5
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sarnia Township
Sarnia Township's August 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 43° and 63°. The average high for August is 76° with an average low of 56°. 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 Sarnia Township. See also: September | October | November.
