S
M
T
W
T
F
S
27
46°
23°
28
40°
26°
29
40°
30°
30
47°
31°
31
47°
33°
1
49°
35°
2
50°
28°
3
51°
23°
4
46°
19°
5
35°
17°
6
32°
20°
7
33°
27°
8
47°
22°
9
44°
20°
10
35°
15°
11
35°
11°
12
33°
15°
13
28°
13°
14
32°
13°
15
28°
16°
16
28°
16°
17
32°
13°
18
30°
15°
19
31°
11°
20
33°
15°
21
30°
28°
22
40°
26°
23
46°
20°
24
41°
21°
25
36°
20°
26
38°
21°
27
40°
21°
28
Hist. Avg.
40°
21°
29
Hist. Avg.
40°
22°
30
Hist. Avg.
40°
22°
31
Hist. Avg.
40°
22°
1
Hist. Avg.
40°
22°
2
Hist. Avg.
40°
22°
3
Hist. Avg.
40°
22°
4
Hist. Avg.
41°
22°
5
Hist. Avg.
41°
22°
6
Hist. Avg.
41°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Lancaster
Lancaster's January 2027 forecast shows daily high temperatures ranging from 28° to 51°, with overnight lows between 11° and 35°. The average high for January is 38° with an average low of 21°. 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 Lancaster. See also: February | March | April.