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
73°
51°
8
81°
47°
9
76°
51°
10
74°
59°
11
68°
63°
12
78°
59°
13
73°
55°
14
67°
44°
15
63°
43°
16
65°
52°
17
71°
51°
18
64°
45°
19
67°
47°
20
68°
45°
21
60°
49°
22
60°
47°
23
59°
41°
24
58°
39°
25
58°
41°
26
64°
44°
27
68°
40°
28
57°
37°
29
55°
36°
30
56°
38°
31
61°
43°
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 81°, with overnight lows between 36° and 63°. The average high for October is 66° 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.
