S
M
T
W
T
F
S
27
25°
18°
28
29°
16°
29
34°
16°
30
34°
22°
31
36°
23°
1
36°
12°
2
37°
6°
3
36°
3°
4
19°
2°
5
18°
9°
6
20°
13°
7
31°
7°
8
27°
15°
9
28°
1°
10
30°
-1°
11
21°
0°
12
17°
-3°
13
20°
-3°
14
13°
-1°
15
14°
4°
16
19°
11°
17
24°
13°
18
28°
7°
19
28°
14°
20
24°
16°
21
30°
17°
22
29°
11°
23
27°
12°
24
24°
9°
25
28°
16°
26
30°
19°
27
29°
17°
28
28°
15°
29
29°
16°
30
Hist. Avg.
29°
10°
31
Hist. Avg.
29°
10°
1
Hist. Avg.
30°
10°
2
Hist. Avg.
30°
10°
3
Hist. Avg.
30°
10°
4
Hist. Avg.
30°
10°
5
Hist. Avg.
30°
11°
6
Hist. Avg.
31°
11°
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 13° to 37°, with overnight lows between -3° and 23°. The average high for January is 27° with an average low of 10°. 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.