S
M
T
W
T
F
S
29
53°
38°
30
55°
35°
1
53°
29°
2
49°
23°
3
38°
26°
4
42°
33°
5
43°
27°
6
41°
25°
7
40°
32°
8
44°
27°
9
47°
24°
10
38°
20°
11
34°
19°
12
33°
20°
13
32°
19°
14
34°
17°
15
32°
17°
16
30°
15°
17
32°
16°
18
33°
13°
19
32°
14°
20
28°
18°
21
32°
25°
22
35°
28°
23
37°
27°
24
36°
29°
25
44°
28°
26
43°
22°
27
34°
22°
28
32°
16°
29
Hist. Avg.
35°
23°
30
Hist. Avg.
35°
23°
31
Hist. Avg.
35°
23°
1
Hist. Avg.
35°
23°
2
Hist. Avg.
35°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lock Haven
Lock Haven's December 2026 forecast shows daily high temperatures ranging from 28° to 55°, with overnight lows between 13° and 38°. The average high for December is 39° with an average low of 23°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Lock Haven. See also: January | February | March.
