S
M
T
W
T
F
S
27
78°
58°
28
76°
58°
29
74°
58°
30
74°
57°
1
75°
56°
2
75°
55°
3
73°
55°
4
75°
54°
5
65°
53°
6
68°
55°
7
70°
48°
8
62°
43°
9
60°
50°
10
68°
51°
11
70°
52°
12
71°
52°
13
70°
51°
14
70°
52°
15
69°
49°
16
70°
45°
17
57°
49°
18
58°
49°
19
61°
48°
20
62°
48°
21
66°
43°
22
55°
40°
23
55°
40°
24
62°
46°
25
65°
48°
26
57°
36°
27
57°
38°
28
60°
46°
29
61°
45°
30
60°
48°
31
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Romeoville
Romeoville's October 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 36° and 58°. The average high for October is 66° with an average low of 49°. 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 Romeoville. See also: November | December | January.
