S
M
T
W
T
F
S
26
82°
69°
27
90°
72°
28
79°
62°
29
82°
58°
30
84°
60°
31
80°
64°
1
71°
65°
2
79°
65°
3
82°
62°
4
84°
62°
5
84°
63°
6
79°
67°
7
85°
65°
8
84°
67°
9
87°
65°
10
87°
74°
11
84°
68°
12
77°
67°
13
82°
65°
14
80°
68°
15
81°
71°
16
86°
73°
17
80°
63°
18
80°
61°
19
83°
66°
20
81°
63°
21
81°
57°
22
80°
60°
23
77°
57°
24
77°
54°
25
77°
61°
26
84°
59°
27
83°
58°
28
83°
56°
29
81°
61°
30
88°
66°
31
87°
66°
1
79°
57°
2
79°
58°
3
80°
56°
4
80°
59°
5
84°
60°
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 77° to 88°, with overnight lows between 56° and 66°. The average high for August is 82° with an average low of 60°. 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.
