S
M
T
W
T
F
S
29
41°
26°
30
44°
31°
1
47°
37°
2
46°
33°
3
49°
34°
4
51°
37°
5
51°
29°
6
39°
25°
7
39°
33°
8
50°
37°
9
48°
35°
10
45°
36°
11
48°
36°
12
49°
34°
13
42°
30°
14
38°
26°
15
36°
24°
16
36°
25°
17
37°
28°
18
42°
34°
19
48°
34°
20
46°
35°
21
49°
31°
22
38°
29°
23
39°
32°
24
48°
33°
25
34°
20°
26
35°
21°
27
35°
28°
28
36°
30°
29
50°
27°
30
48°
24°
31
36°
23°
1
36°
20°
2
35°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Reading
Reading's December 2026 forecast shows daily high temperatures ranging from 34° to 51°, with overnight lows between 18° and 37°. The average high for December is 43° with an average low of 30°. 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 Reading. See also: January | February | March.
