S
M
T
W
T
F
S
29
55°
25°
30
52°
22°
1
45°
21°
2
36°
23°
3
38°
29°
4
42°
35°
5
46°
34°
6
49°
30°
7
48°
30°
8
42°
33°
9
43°
26°
10
42°
24°
11
37°
22°
12
38°
21°
13
37°
20°
14
34°
19°
15
33°
19°
16
33°
24°
17
Hist. Avg.
41°
27°
18
Hist. Avg.
41°
27°
19
Hist. Avg.
40°
26°
20
Hist. Avg.
40°
26°
21
Hist. Avg.
40°
26°
22
Hist. Avg.
40°
26°
23
Hist. Avg.
40°
26°
24
Hist. Avg.
39°
25°
25
Hist. Avg.
39°
25°
26
Hist. Avg.
39°
25°
27
Hist. Avg.
39°
25°
28
Hist. Avg.
38°
24°
29
Hist. Avg.
38°
24°
30
Hist. Avg.
38°
24°
31
Hist. Avg.
38°
24°
1
Hist. Avg.
38°
24°
2
Hist. Avg.
38°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Dayton
Dayton's December 2026 forecast shows daily high temperatures ranging from 33° to 55°, with overnight lows between 19° and 35°. The average high for December is 42° 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 Dayton. See also: January | February | March.
