S
M
T
W
T
F
S
29
51°
37°
30
53°
36°
1
52°
35°
2
53°
33°
3
41°
34°
4
46°
31°
5
51°
35°
6
50°
33°
7
41°
26°
8
37°
23°
9
36°
22°
10
37°
25°
11
38°
33°
12
42°
28°
13
42°
26°
14
37°
20°
15
36°
24°
16
37°
28°
17
42°
29°
18
43°
28°
19
42°
21°
20
39°
19°
21
35°
18°
22
34°
23°
23
36°
28°
24
38°
25°
25
37°
17°
26
35°
13°
27
33°
16°
28
32°
16°
29
33°
13°
30
32°
24°
31
38°
18°
1
38°
15°
2
32°
10°
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 32° to 53°, with overnight lows between 10° and 37°. The average high for December is 40° 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 Middletown. See also: January | February | March.
