S
M
T
W
T
F
S
26
86°
69°
27
86°
69°
28
87°
68°
29
88°
68°
30
87°
64°
31
81°
61°
1
80°
66°
2
80°
68°
3
81°
66°
4
84°
68°
5
87°
69°
6
86°
68°
7
85°
65°
8
80°
62°
9
80°
66°
10
83°
63°
11
84°
66°
12
85°
69°
13
87°
68°
14
88°
69°
15
87°
68°
16
89°
67°
17
88°
61°
18
81°
59°
19
79°
58°
20
78°
58°
21
79°
59°
22
80°
59°
23
80°
60°
24
81°
59°
25
83°
60°
26
84°
64°
27
85°
58°
28
80°
58°
29
80°
59°
30
83°
61°
31
83°
59°
1
84°
58°
2
79°
57°
3
78°
63°
4
82°
64°
5
85°
63°
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 78° to 89°, with overnight lows between 57° and 69°. The average high for August is 83° 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.
