S
M
T
W
T
F
S
29
50°
38°
30
60°
32°
1
61°
28°
2
50°
36°
3
56°
31°
4
59°
27°
5
52°
32°
6
53°
38°
7
58°
34°
8
60°
29°
9
57°
32°
10
49°
35°
11
54°
35°
12
57°
34°
13
57°
33°
14
51°
34°
15
54°
33°
16
58°
27°
17
58°
26°
18
47°
26°
19
50°
27°
20
48°
32°
21
54°
33°
22
57°
34°
23
55°
34°
24
55°
33°
25
54°
28°
26
54°
26°
27
48°
27°
28
46°
28°
29
49°
24°
30
47°
26°
31
45°
34°
1
55°
19°
2
57°
16°
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 45° to 61°, with overnight lows between 16° and 38°. The average high for December is 54° 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 Middletown. See also: January | February | March.
