S
M
T
W
T
F
S
27
30°
20°
28
32°
21°
29
39°
22°
30
40°
26°
31
44°
26°
1
44°
14°
2
43°
9°
3
41°
7°
4
25°
8°
5
26°
18°
6
30°
19°
7
36°
16°
8
34°
19°
9
35°
5°
10
34°
1°
11
29°
4°
12
22°
0°
13
27°
2°
14
19°
3°
15
20°
5°
16
24°
9°
17
28°
11°
18
33°
14°
19
34°
18°
20
32°
18°
21
35°
19°
22
34°
16°
23
33°
15°
24
30°
17°
25
33°
18°
26
34°
18°
27
36°
20°
28
32°
16°
29
35°
20°
30
Hist. Avg.
34°
17°
31
Hist. Avg.
34°
17°
1
Hist. Avg.
34°
17°
2
Hist. Avg.
34°
17°
3
Hist. Avg.
35°
17°
4
Hist. Avg.
35°
17°
5
Hist. Avg.
35°
18°
6
Hist. Avg.
35°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Mount Pleasant
Mount Pleasant's January 2027 forecast shows daily high temperatures ranging from 19° to 44°, with overnight lows between 0° and 26°. The average high for January is 32° with an average low of 14°. 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 Pleasant. See also: February | March | April.