S
M
T
W
T
F
S
27
27°
21°
28
32°
24°
29
38°
23°
30
38°
26°
31
39°
27°
1
40°
20°
2
41°
14°
3
42°
10°
4
25°
9°
5
23°
12°
6
23°
19°
7
32°
17°
8
31°
18°
9
31°
11°
10
33°
7°
11
27°
8°
12
22°
3°
13
24°
3°
14
18°
5°
15
19°
8°
16
22°
12°
17
27°
15°
18
32°
14°
19
33°
18°
20
30°
21°
21
34°
22°
22
34°
19°
23
33°
17°
24
31°
16°
25
30°
19°
26
34°
20°
27
35°
22°
28
Hist. Avg.
29°
14°
29
Hist. Avg.
29°
14°
30
Hist. Avg.
29°
14°
31
Hist. Avg.
30°
14°
1
Hist. Avg.
30°
14°
2
Hist. Avg.
30°
15°
3
Hist. Avg.
30°
15°
4
Hist. Avg.
30°
15°
5
Hist. Avg.
30°
15°
6
Hist. Avg.
30°
16°
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 18° to 42°, with overnight lows between 3° and 27°. The average high for January is 31° with an average low of 16°. 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.