S
M
T
W
T
F
S
27
47°
39°
28
44°
39°
29
45°
37°
30
46°
39°
31
46°
39°
1
45°
38°
2
45°
40°
3
46°
39°
4
47°
40°
5
47°
39°
6
45°
39°
7
46°
41°
8
48°
40°
9
47°
39°
10
47°
39°
11
46°
36°
12
46°
34°
13
44°
36°
14
41°
35°
15
42°
38°
16
42°
40°
17
46°
37°
18
46°
33°
19
44°
35°
20
44°
40°
21
46°
41°
22
47°
38°
23
48°
33°
24
47°
32°
25
41°
33°
26
41°
33°
27
42°
36°
28
41°
34°
29
42°
36°
30
41°
34°
31
44°
37°
1
43°
39°
2
43°
39°
3
45°
37°
4
44°
35°
5
43°
33°
6
41°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Castleton
Castleton's January 2027 forecast shows daily high temperatures ranging from 41° to 48°, with overnight lows between 32° and 41°. The average high for January is 45° with an average low of 37°. 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 Castleton. See also: February | March | April.
