S
M
T
W
T
F
S
26
86°
64°
27
86°
65°
28
87°
67°
29
88°
71°
30
87°
70°
31
92°
71°
1
93°
69°
2
90°
71°
3
93°
72°
4
93°
67°
5
94°
63°
6
87°
63°
7
84°
64°
8
84°
62°
9
85°
62°
10
86°
63°
11
88°
66°
12
91°
67°
13
92°
67°
14
91°
68°
15
92°
67°
16
92°
62°
17
85°
61°
18
86°
61°
19
88°
65°
20
91°
65°
21
91°
61°
22
83°
67°
23
89°
68°
24
91°
68°
25
91°
66°
26
89°
68°
27
90°
68°
28
90°
67°
29
89°
68°
30
90°
65°
31
87°
65°
1
86°
64°
2
87°
61°
3
84°
62°
4
83°
65°
5
87°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rantoul
Rantoul's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 61° and 72°. The average high for August is 89° 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 Rantoul. See also: September | October | November.
