S
M
T
W
T
F
S
26
80°
59°
27
81°
60°
28
82°
62°
29
82°
65°
30
83°
61°
31
86°
64°
1
87°
66°
2
88°
66°
3
88°
67°
4
87°
62°
5
84°
60°
6
80°
59°
7
79°
59°
8
80°
60°
9
81°
60°
10
83°
61°
11
83°
61°
12
85°
60°
13
86°
64°
14
87°
65°
15
87°
65°
16
86°
66°
17
84°
65°
18
81°
59°
19
80°
59°
20
80°
61°
21
81°
65°
22
81°
63°
23
79°
58°
24
80°
63°
25
80°
64°
26
87°
57°
27
80°
64°
28
80°
65°
29
86°
64°
30
85°
65°
31
84°
62°
1
83°
61°
2
84°
61°
3
83°
59°
4
84°
61°
5
83°
61°
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 88°, with overnight lows between 57° and 67°. The average high for August is 83° with an average low of 62°. 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.
