S
M
T
W
T
F
S
29
48°
40°
30
52°
42°
1
53°
41°
2
52°
42°
3
54°
40°
4
52°
39°
5
51°
39°
6
50°
40°
7
52°
38°
8
46°
36°
9
43°
36°
10
44°
35°
11
43°
37°
12
44°
34°
13
43°
31°
14
45°
25°
15
38°
26°
16
37°
31°
17
40°
30°
18
39°
35°
19
46°
34°
20
48°
31°
21
43°
28°
22
39°
27°
23
37°
26°
24
39°
33°
25
41°
26°
26
47°
22°
27
36°
24°
28
33°
24°
29
37°
23°
30
36°
27°
31
37°
33°
1
48°
27°
2
47°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Middletown
Middletown's December 2026 forecast shows daily high temperatures ranging from 33° to 54°, with overnight lows between 22° and 42°. The average high for December is 44° with an average low of 32°. 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 Middletown. See also: January | February | March.
