S
M
T
W
T
F
S
26
89°
72°
27
95°
77°
28
85°
71°
29
85°
63°
30
85°
60°
31
75°
69°
1
72°
66°
2
80°
64°
3
84°
62°
4
87°
65°
5
81°
67°
6
80°
68°
7
85°
65°
8
86°
65°
9
86°
72°
10
89°
72°
11
86°
68°
12
84°
66°
13
80°
64°
14
80°
66°
15
81°
64°
16
79°
62°
17
81°
65°
18
81°
63°
19
82°
65°
20
84°
64°
21
87°
68°
22
88°
69°
23
87°
68°
24
87°
68°
25
86°
67°
26
87°
67°
27
85°
65°
28
84°
66°
29
85°
65°
30
86°
66°
31
86°
66°
1
87°
65°
2
86°
66°
3
86°
65°
4
85°
64°
5
85°
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 79° to 89°, with overnight lows between 62° and 72°. The average high for August is 85° with an average low of 66°. 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.
