S
M
T
W
T
F
S
27
74°
58°
28
78°
58°
29
78°
50°
30
71°
49°
1
70°
57°
2
71°
56°
3
74°
53°
4
76°
54°
5
77°
57°
6
76°
56°
7
75°
57°
8
76°
54°
9
77°
53°
10
72°
49°
11
73°
53°
12
65°
54°
13
66°
53°
14
69°
52°
15
66°
51°
16
71°
51°
17
72°
44°
18
73°
41°
19
62°
44°
20
62°
40°
21
61°
49°
22
61°
49°
23
68°
46°
24
68°
40°
25
60°
38°
26
59°
39°
27
60°
46°
28
64°
40°
29
65°
37°
30
61°
36°
31
68°
42°
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 59° to 78°, with overnight lows between 36° and 58°. The average high for October is 69° with an average low of 49°. 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.
