S
M
T
W
T
F
S
26
87°
66°
27
87°
66°
28
88°
67°
29
88°
67°
30
90°
69°
31
91°
70°
1
91°
70°
2
88°
72°
3
92°
72°
4
94°
71°
5
93°
66°
6
91°
65°
7
87°
65°
8
86°
66°
9
87°
65°
10
88°
66°
11
88°
67°
12
90°
66°
13
90°
70°
14
91°
67°
15
91°
66°
16
93°
68°
17
93°
64°
18
86°
63°
19
87°
67°
20
89°
70°
21
92°
67°
22
92°
70°
23
92°
70°
24
93°
69°
25
93°
69°
26
92°
70°
27
92°
70°
28
91°
69°
29
91°
70°
30
90°
69°
31
88°
66°
1
87°
65°
2
88°
65°
3
86°
63°
4
89°
66°
5
87°
65°
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 86° to 94°, with overnight lows between 63° and 72°. The average high for August is 90° with an average low of 67°. 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.
