S
M
T
W
T
F
S
29
38°
25°
30
36°
24°
1
36°
23°
2
37°
35°
3
47°
29°
4
51°
24°
5
36°
28°
6
36°
29°
7
41°
28°
8
46°
31°
9
37°
23°
10
44°
34°
11
46°
37°
12
Hist. Avg.
39°
27°
13
Hist. Avg.
39°
27°
14
Hist. Avg.
39°
26°
15
Hist. Avg.
38°
26°
16
Hist. Avg.
38°
26°
17
Hist. Avg.
38°
26°
18
Hist. Avg.
38°
26°
19
Hist. Avg.
37°
25°
20
Hist. Avg.
37°
25°
21
Hist. Avg.
37°
25°
22
Hist. Avg.
37°
25°
23
Hist. Avg.
36°
24°
24
Hist. Avg.
36°
24°
25
Hist. Avg.
36°
24°
26
Hist. Avg.
36°
24°
27
Hist. Avg.
36°
24°
28
Hist. Avg.
36°
23°
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 State College
State College's December 2026 forecast shows daily high temperatures ranging from 36° to 51°, with overnight lows between 23° and 37°. The average high for December is 41° with an average low of 28°. 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 State College. See also: January | February | March.