S
M
T
W
T
F
S
27
76°
58°
28
77°
59°
29
82°
59°
30
79°
57°
1
80°
55°
2
75°
56°
3
73°
55°
4
77°
54°
5
73°
48°
6
69°
44°
7
66°
44°
8
65°
48°
9
68°
44°
10
66°
44°
11
62°
40°
12
61°
46°
13
63°
42°
14
66°
50°
15
69°
51°
16
72°
48°
17
70°
45°
18
69°
42°
19
60°
38°
20
58°
40°
21
62°
48°
22
66°
49°
23
68°
43°
24
66°
36°
25
59°
38°
26
57°
39°
27
55°
35°
28
55°
34°
29
51°
31°
30
51°
33°
31
53°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Champaign
Champaign's October 2026 forecast shows daily high temperatures ranging from 51° to 82°, with overnight lows between 31° and 59°. The average high for October is 66° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Champaign. See also: November | December | January.