S
M
T
W
T
F
S
26
84°
68°
27
82°
61°
28
77°
65°
29
81°
66°
30
80°
63°
31
80°
67°
1
81°
61°
2
80°
58°
3
79°
60°
4
77°
58°
5
78°
60°
6
79°
60°
7
81°
59°
8
80°
60°
9
84°
62°
10
84°
62°
11
83°
65°
12
85°
66°
13
85°
67°
14
84°
65°
15
84°
59°
16
83°
58°
17
77°
58°
18
76°
60°
19
75°
58°
20
76°
57°
21
76°
63°
22
79°
64°
23
83°
63°
24
84°
64°
25
83°
57°
26
83°
56°
27
76°
55°
28
75°
55°
29
75°
60°
30
78°
63°
31
82°
63°
1
82°
56°
2
81°
55°
3
79°
61°
4
81°
61°
5
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pontiac
Pontiac's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 55° and 68°. The average high for August is 80° with an average low of 61°. 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 Pontiac. See also: September | October | November.
