S
M
T
W
T
F
S
26
85°
65°
27
84°
60°
28
82°
61°
29
84°
65°
30
85°
62°
31
84°
63°
1
86°
66°
2
87°
60°
3
84°
61°
4
81°
59°
5
82°
60°
6
83°
62°
7
84°
60°
8
83°
60°
9
83°
64°
10
86°
65°
11
87°
65°
12
86°
66°
13
86°
66°
14
88°
65°
15
89°
60°
16
88°
59°
17
82°
58°
18
82°
64°
19
86°
58°
20
81°
57°
21
80°
57°
22
81°
59°
23
86°
61°
24
88°
63°
25
87°
62°
26
86°
57°
27
81°
56°
28
79°
56°
29
80°
62°
30
82°
61°
31
82°
62°
1
85°
61°
2
85°
59°
3
81°
61°
4
83°
60°
5
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Peoria
Peoria's August 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 56° and 66°. The average high for August is 84° 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 Peoria. See also: September | October | November.
