S
M
T
W
T
F
S
27
79°
60°
28
75°
55°
29
70°
52°
30
72°
55°
1
71°
56°
2
71°
55°
3
68°
52°
4
70°
57°
5
72°
49°
6
66°
46°
7
65°
46°
8
68°
50°
9
65°
50°
10
65°
51°
11
70°
52°
12
74°
51°
13
64°
50°
14
64°
49°
15
68°
50°
16
62°
44°
17
62°
40°
18
64°
41°
19
63°
44°
20
71°
50°
21
70°
41°
22
65°
40°
23
60°
48°
24
60°
50°
25
69°
41°
26
70°
37°
27
57°
37°
28
56°
38°
29
57°
44°
30
57°
41°
31
59°
46°
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 56° to 79°, with overnight lows between 37° and 60°. The average high for October is 66° 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.
