S
M
T
W
T
F
S
26
91°
68°
27
91°
69°
28
89°
68°
29
89°
67°
30
85°
66°
31
83°
66°
1
82°
65°
2
83°
65°
3
85°
66°
4
84°
61°
5
83°
59°
6
82°
60°
7
84°
64°
8
82°
66°
9
82°
65°
10
83°
66°
11
85°
65°
12
85°
65°
13
87°
66°
14
88°
66°
15
84°
65°
16
82°
66°
17
82°
65°
18
84°
65°
19
86°
64°
20
87°
64°
21
80°
55°
22
79°
56°
23
80°
57°
24
79°
58°
25
82°
63°
26
86°
65°
27
89°
65°
28
90°
66°
29
91°
59°
30
90°
56°
31
81°
57°
1
81°
61°
2
82°
63°
3
88°
65°
4
89°
64°
5
90°
56°
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 79° to 91°, with overnight lows between 55° and 69°. The average high for August is 85° with an average low of 63°. 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.
