S
M
T
W
T
F
S
27
66°
61°
28
71°
61°
29
74°
64°
30
80°
61°
1
83°
64°
2
86°
64°
3
67°
59°
4
65°
61°
5
74°
58°
6
66°
50°
7
72°
49°
8
81°
58°
9
77°
53°
10
72°
54°
11
67°
62°
12
76°
60°
13
82°
58°
14
89°
61°
15
66°
56°
16
84°
53°
17
58°
39°
18
60°
41°
19
63°
44°
20
66°
45°
21
71°
49°
22
70°
48°
23
68°
50°
24
69°
51°
25
70°
51°
26
65°
48°
27
68°
42°
28
57°
37°
29
55°
36°
30
59°
48°
31
59°
47°
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 55° to 89°, with overnight lows between 36° and 61°. The average high for October is 67° with an average low of 47°. 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.
