S
M
T
W
T
F
S
26
98°
76°
27
99°
76°
28
98°
77°
29
100°
77°
30
100°
76°
31
99°
77°
1
100°
77°
2
100°
78°
3
101°
78°
4
101°
77°
5
100°
78°
6
101°
77°
7
101°
78°
8
100°
77°
9
101°
78°
10
99°
75°
11
100°
75°
12
98°
74°
13
97°
73°
14
100°
74°
15
99°
75°
16
99°
75°
17
97°
74°
18
98°
70°
19
100°
70°
20
92°
68°
21
93°
68°
22
93°
69°
23
94°
69°
24
94°
70°
25
95°
70°
26
94°
69°
27
95°
69°
28
96°
70°
29
93°
70°
30
97°
71°
31
97°
72°
1
98°
72°
2
97°
70°
3
95°
70°
4
91°
69°
5
93°
71°
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 91° to 101°, with overnight lows between 68° and 78°. The average high for August is 97° with an average low of 73°. 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.
