S
M
T
W
T
F
S
27
66°
61°
28
71°
61°
29
74°
64°
30
80°
61°
1
87°
63°
2
89°
62°
3
70°
59°
4
68°
55°
5
73°
44°
6
65°
42°
7
67°
44°
8
70°
47°
9
70°
51°
10
71°
49°
11
72°
51°
12
72°
51°
13
74°
48°
14
62°
43°
15
62°
43°
16
64°
47°
17
71°
52°
18
69°
52°
19
68°
50°
20
70°
46°
21
60°
42°
22
59°
44°
23
60°
42°
24
67°
48°
25
69°
49°
26
69°
40°
27
57°
37°
28
57°
39°
29
60°
46°
30
58°
46°
31
61°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in McLean
McLean's October 2026 forecast shows daily high temperatures ranging from 57° to 89°, with overnight lows between 37° and 63°. The average high for October is 68° with an average low of 48°. 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 McLean. See also: November | December | January.
