S
M
T
W
T
F
S
29
51°
38°
30
56°
35°
1
56°
28°
2
54°
25°
3
43°
26°
4
44°
32°
5
48°
30°
6
47°
26°
7
44°
32°
8
50°
27°
9
50°
26°
10
43°
22°
11
40°
19°
12
38°
18°
13
36°
22°
14
39°
16°
15
38°
17°
16
33°
18°
17
36°
22°
18
45°
18°
19
42°
21°
20
36°
24°
21
40°
27°
22
41°
23°
23
38°
23°
24
37°
28°
25
47°
27°
26
49°
24°
27
45°
24°
28
Hist. Avg.
39°
21°
29
Hist. Avg.
39°
21°
30
Hist. Avg.
39°
21°
31
Hist. Avg.
38°
20°
1
Hist. Avg.
38°
20°
2
Hist. Avg.
38°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Reading
Reading's December 2026 forecast shows daily high temperatures ranging from 33° to 56°, with overnight lows between 16° and 38°. The average high for December is 44° with an average low of 25°. 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.