S
M
T
W
T
F
S
29
42°
28°
30
43°
24°
1
43°
27°
2
42°
28°
3
42°
27°
4
41°
29°
5
42°
25°
6
41°
23°
7
37°
20°
8
35°
22°
9
36°
24°
10
38°
29°
11
40°
22°
12
36°
19°
13
49°
31°
14
49°
34°
15
Hist. Avg.
41°
28°
16
Hist. Avg.
41°
28°
17
Hist. Avg.
41°
27°
18
Hist. Avg.
40°
27°
19
Hist. Avg.
40°
27°
20
Hist. Avg.
40°
27°
21
Hist. Avg.
40°
26°
22
Hist. Avg.
40°
26°
23
Hist. Avg.
39°
26°
24
Hist. Avg.
39°
26°
25
Hist. Avg.
39°
25°
26
Hist. Avg.
39°
25°
27
Hist. Avg.
38°
25°
28
Hist. Avg.
38°
25°
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 Dallas
Dallas's December 2026 forecast shows daily high temperatures ranging from 35° to 49°, with overnight lows between 19° and 34°. The average high for December is 41° with an average low of 26°. 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 Dallas. See also: January | February | March.
