S
M
T
W
T
F
S
26
78°
60°
27
77°
59°
28
76°
60°
29
74°
59°
30
74°
61°
31
76°
63°
1
77°
63°
2
81°
64°
3
80°
64°
4
81°
62°
5
75°
60°
6
74°
62°
7
77°
63°
8
76°
61°
9
75°
63°
10
76°
60°
11
73°
57°
12
74°
62°
13
80°
62°
14
76°
56°
15
72°
55°
16
72°
57°
17
73°
61°
18
75°
62°
19
72°
62°
20
74°
61°
21
78°
61°
22
72°
59°
23
72°
60°
24
76°
56°
25
77°
60°
26
80°
53°
27
76°
52°
28
69°
53°
29
68°
51°
30
70°
51°
31
71°
59°
1
74°
60°
2
70°
61°
3
76°
61°
4
78°
53°
5
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Simcoe
Simcoe's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 51° and 64°. The average high for August is 75° with an average low of 59°. 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 Simcoe. See also: September | October | November.