S
M
T
W
T
F
S
26
83°
66°
27
90°
72°
28
80°
66°
29
82°
56°
30
83°
60°
31
78°
61°
1
77°
67°
2
80°
65°
3
82°
60°
4
84°
60°
5
84°
62°
6
79°
65°
7
87°
63°
8
86°
68°
9
88°
65°
10
87°
75°
11
88°
67°
12
80°
68°
13
83°
67°
14
82°
72°
15
89°
71°
16
82°
67°
17
80°
61°
18
81°
64°
19
81°
62°
20
74°
57°
21
74°
57°
22
78°
55°
23
83°
61°
24
85°
61°
25
83°
59°
26
81°
58°
27
88°
72°
28
78°
59°
29
78°
60°
30
82°
62°
31
86°
65°
1
87°
66°
2
87°
66°
3
86°
65°
4
86°
65°
5
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Champaign
Champaign's August 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 55° and 72°. The average high for August is 82° 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 Champaign. See also: September | October | November.
