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