S
M
T
W
T
F
S
29
40°
20°
30
53°
39°
31
50°
26°
1
40°
28°
2
37°
30°
3
31°
23°
4
24°
11°
5
32°
7°
6
24°
7°
7
25°
12°
8
23°
13°
9
29°
16°
10
32°
19°
11
26°
22°
12
28°
5°
13
31°
8°
14
33°
21°
15
23°
15°
16
24°
6°
17
30°
-1°
18
40°
11°
19
41°
24°
20
24°
-3°
21
18°
-13°
22
16°
-16°
23
24°
-2°
24
24°
-2°
25
21°
-6°
26
35°
2°
27
36°
8°
28
35°
8°
29
16°
8°
30
14°
-1°
31
32°
8°
1
22°
0°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Castine
Castine's January 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. 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 Castine. See also: February | March | April.
