S
M
T
W
T
F
S
29
53°
36°
30
53°
34°
1
52°
31°
2
53°
22°
3
52°
19°
4
39°
18°
5
35°
17°
6
35°
18°
7
36°
20°
8
38°
21°
9
37°
22°
10
34°
18°
11
34°
21°
12
35°
22°
13
35°
19°
14
33°
15°
15
32°
15°
16
32°
20°
17
31°
29°
18
42°
30°
19
46°
29°
20
47°
27°
21
45°
31°
22
45°
30°
23
47°
27°
24
47°
21°
25
40°
22°
26
38°
26°
27
41°
31°
28
45°
31°
29
46°
28°
30
47°
26°
31
45°
22°
1
42°
20°
2
33°
19°
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 31° to 53°, with overnight lows between 15° and 36°. The average high for December is 41° with an average low of 24°. 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.
