S
M
T
W
T
F
S
26
85°
65°
27
86°
64°
28
83°
63°
29
86°
61°
30
80°
61°
31
83°
65°
1
81°
64°
2
81°
66°
3
86°
66°
4
88°
65°
5
84°
65°
6
84°
63°
7
81°
59°
8
80°
60°
9
81°
62°
10
80°
59°
11
80°
58°
12
82°
65°
13
87°
67°
14
87°
66°
15
86°
65°
16
81°
65°
17
86°
66°
18
87°
66°
19
87°
65°
20
80°
64°
21
80°
64°
22
81°
63°
23
78°
64°
24
79°
64°
25
80°
63°
26
82°
64°
27
79°
63°
28
88°
57°
29
82°
57°
30
79°
57°
31
83°
56°
1
85°
59°
2
84°
61°
3
86°
62°
4
84°
53°
5
84°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Normal
Normal's August 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 53° 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 Normal. See also: September | October | November.