S
M
T
W
T
F
S
27
78°
58°
28
79°
59°
29
81°
58°
30
81°
57°
1
79°
54°
2
78°
56°
3
79°
56°
4
78°
55°
5
78°
58°
6
77°
54°
7
73°
50°
8
66°
47°
9
67°
52°
10
69°
50°
11
65°
53°
12
72°
48°
13
66°
44°
14
65°
43°
15
64°
45°
16
67°
53°
17
68°
51°
18
71°
46°
19
71°
45°
20
64°
47°
21
61°
45°
22
61°
40°
23
62°
45°
24
66°
48°
25
67°
42°
26
60°
40°
27
60°
45°
28
61°
43°
29
57°
37°
30
57°
35°
31
55°
35°
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 35° and 59°. The average high for October is 69° 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.
