S
M
T
W
T
F
S
29
42°
29°
30
40°
28°
1
33°
27°
2
34°
24°
3
33°
26°
4
36°
26°
5
36°
25°
6
33°
20°
7
26°
11°
8
24°
12°
9
25°
12°
10
32°
23°
11
35°
24°
12
37°
24°
13
33°
23°
14
25°
23°
15
33°
19°
16
34°
20°
17
32°
21°
18
33°
19°
19
31°
15°
20
29°
7°
21
27°
17°
22
28°
15°
23
31°
19°
24
29°
15°
25
33°
9°
26
27°
16°
27
24°
18°
28
30°
14°
29
29°
12°
30
26°
12°
31
27°
4°
1
29°
2°
2
18°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Houston
Houston's December 2026 forecast shows daily high temperatures ranging from 18° to 42°, with overnight lows between 2° and 29°. The average high for December is 31° with an average low of 18°. 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 Houston. See also: January | February | March.
