S
M
T
W
T
F
S
27
40°
21°
28
40°
20°
29
39°
24°
30
39°
20°
31
40°
18°
1
37°
14°
2
36°
19°
3
37°
28°
4
39°
31°
5
43°
30°
6
50°
21°
7
44°
15°
8
37°
17°
9
36°
21°
10
39°
16°
11
40°
13°
12
36°
12°
13
32°
14°
14
38°
14°
15
35°
16°
16
38°
17°
17
41°
14°
18
36°
13°
19
34°
16°
20
36°
19°
21
40°
28°
22
40°
29°
23
41°
28°
24
44°
21°
25
40°
21°
26
42°
23°
27
44°
23°
28
43°
19°
29
40°
22°
30
40°
17°
31
42°
20°
1
Hist. Avg.
43°
23°
2
Hist. Avg.
44°
23°
3
Hist. Avg.
44°
23°
4
Hist. Avg.
44°
23°
5
Hist. Avg.
44°
23°
6
Hist. Avg.
44°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Mount Vernon
Mount Vernon's January 2027 forecast shows daily high temperatures ranging from 32° to 50°, with overnight lows between 12° and 31°. The average high for January is 39° with an average low of 20°. 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 Mount Vernon. See also: February | March | April.
