S
M
T
W
T
F
S
29
56°
32°
30
55°
30°
1
48°
29°
2
48°
30°
3
47°
35°
4
51°
37°
5
52°
39°
6
54°
37°
7
55°
34°
8
54°
30°
9
46°
27°
10
44°
32°
11
49°
35°
12
50°
34°
13
53°
36°
14
51°
37°
15
51°
32°
16
53°
27°
17
54°
26°
18
41°
27°
19
43°
21°
20
41°
16°
21
40°
15°
22
31°
21°
23
34°
18°
24
36°
20°
25
34°
28°
26
38°
25°
27
40°
30°
28
40°
35°
29
49°
32°
30
50°
32°
31
45°
28°
1
43°
23°
2
39°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cincinnati
Cincinnati's December 2026 forecast shows daily high temperatures ranging from 31° to 56°, with overnight lows between 15° and 39°. The average high for December is 46° with an average low of 29°. 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 Cincinnati. See also: January | February | March.
