S
M
T
W
T
F
S
27
37°
17°
28
33°
19°
29
35°
19°
30
35°
28°
31
40°
27°
1
49°
20°
2
45°
18°
3
33°
18°
4
32°
20°
5
35°
30°
6
44°
32°
7
47°
24°
8
49°
12°
9
47°
18°
10
28°
24°
11
36°
20°
12
37°
16°
13
32°
16°
14
31°
11°
15
31°
17°
16
30°
22°
17
39°
27°
18
38°
24°
19
48°
17°
20
42°
17°
21
31°
24°
22
36°
26°
23
42°
28°
24
44°
30°
25
44°
30°
26
47°
28°
27
47°
27°
28
45°
26°
29
45°
26°
30
41°
22°
31
36°
19°
1
47°
16°
2
Hist. Avg.
41°
25°
3
Hist. Avg.
41°
25°
4
Hist. Avg.
41°
26°
5
Hist. Avg.
41°
26°
6
Hist. Avg.
41°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Demarest
Demarest's January 2027 forecast shows daily high temperatures ranging from 28° to 49°, with overnight lows between 11° and 32°. The average high for January is 39° with an average low of 22°. 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 Demarest. See also: February | March | April.