S
M
T
W
T
F
S
27
43°
35°
28
44°
36°
29
43°
37°
30
43°
39°
31
44°
38°
1
46°
36°
2
44°
34°
3
40°
32°
4
38°
31°
5
38°
35°
6
44°
38°
7
45°
37°
8
44°
33°
9
41°
37°
10
40°
34°
11
39°
35°
12
40°
36°
13
41°
33°
14
41°
32°
15
38°
31°
16
38°
30°
17
39°
37°
18
38°
37°
19
44°
36°
20
43°
31°
21
42°
35°
22
39°
33°
23
44°
34°
24
41°
35°
25
43°
35°
26
44°
34°
27
41°
35°
28
40°
32°
29
39°
31°
30
38°
34°
31
40°
34°
1
40°
35°
2
Hist. Avg.
44°
35°
3
Hist. Avg.
44°
35°
4
Hist. Avg.
44°
35°
5
Hist. Avg.
44°
35°
6
Hist. Avg.
44°
35°
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 38° to 46°, with overnight lows between 30° and 39°. The average high for January is 41° with an average low of 35°. 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.
