S
M
T
W
T
F
S
27
70°
40°
28
69°
41°
29
72°
43°
30
76°
46°
1
78°
46°
2
78°
45°
3
77°
45°
4
76°
44°
5
69°
38°
6
64°
34°
7
64°
35°
8
63°
34°
9
62°
33°
10
63°
34°
11
65°
36°
12
71°
41°
13
72°
42°
14
72°
42°
15
71°
40°
16
71°
41°
17
69°
41°
18
66°
40°
19
65°
39°
20
58°
40°
21
57°
36°
22
56°
32°
23
62°
31°
24
61°
32°
25
62°
34°
26
66°
33°
27
67°
34°
28
63°
36°
29
65°
36°
30
65°
35°
31
64°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Janesville
Janesville's October 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 31° and 46°. The average high for October is 67° with an average low of 38°. 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 Janesville. See also: November | December | January.
