S
M
T
W
T
F
S
29
46°
37°
30
53°
32°
1
54°
29°
2
47°
32°
3
53°
25°
4
52°
24°
5
39°
23°
6
38°
22°
7
38°
23°
8
40°
27°
9
40°
29°
10
51°
28°
11
44°
28°
12
40°
25°
13
38°
26°
14
38°
24°
15
37°
20°
16
36°
17°
17
34°
20°
18
34°
30°
19
41°
32°
20
42°
26°
21
47°
26°
22
40°
34°
23
49°
35°
24
48°
31°
25
47°
29°
26
46°
29°
27
42°
30°
28
45°
32°
29
46°
33°
30
47°
33°
31
48°
30°
1
48°
28°
2
46°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Exton
Exton's December 2026 forecast shows daily high temperatures ranging from 34° to 54°, with overnight lows between 17° and 37°. The average high for December is 44° 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 Exton. See also: January | February | March.
