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
90°
65°
15
77°
61°
16
80°
61°
17
62°
48°
18
62°
43°
19
69°
42°
20
72°
47°
21
68°
49°
22
70°
45°
23
64°
49°
24
64°
42°
25
66°
43°
26
72°
46°
27
72°
50°
28
67°
47°
29
73°
48°
30
76°
44°
31
64°
49°
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 64° to 76°, with overnight lows between 44° and 49°. The average high for October is 70° 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.
