S
M
T
W
T
F
S
27
55°
29°
28
50°
22°
29
45°
27°
30
44°
20°
31
44°
19°
1
42°
24°
2
44°
29°
3
51°
31°
4
57°
34°
5
54°
26°
6
56°
21°
7
45°
23°
8
46°
25°
9
45°
23°
10
48°
24°
11
56°
19°
12
44°
18°
13
41°
18°
14
44°
21°
15
45°
21°
16
46°
18°
17
46°
18°
18
42°
19°
19
46°
23°
20
53°
32°
21
54°
29°
22
55°
24°
23
49°
22°
24
50°
25°
25
53°
26°
26
54°
29°
27
53°
31°
28
52°
34°
29
52°
32°
30
46°
25°
31
45°
23°
1
55°
35°
2
Hist. Avg.
50°
24°
3
Hist. Avg.
50°
24°
4
Hist. Avg.
50°
24°
5
Hist. Avg.
50°
24°
6
Hist. Avg.
51°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in McLean
McLean's January 2027 forecast shows daily high temperatures ranging from 41° to 57°, with overnight lows between 18° and 35°. The average high for January is 49° with an average low of 25°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in McLean. See also: February | March | April.
