S
M
T
W
T
F
S
29
38°
26°
30
34°
28°
1
34°
25°
2
35°
24°
3
30°
26°
4
32°
23°
5
34°
24°
6
31°
24°
7
31°
25°
8
32°
21°
9
28°
19°
10
27°
24°
11
30°
26°
12
33°
24°
13
34°
22°
14
32°
20°
15
34°
20°
16
35°
24°
17
33°
21°
18
28°
20°
19
29°
19°
20
29°
17°
21
25°
19°
22
26°
20°
23
29°
25°
24
35°
26°
25
29°
20°
26
30°
12°
27
29°
13°
28
28°
14°
29
25°
18°
30
24°
24°
31
29°
20°
1
33°
25°
2
32°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Downtown
Downtown's December 2026 forecast shows daily high temperatures ranging from 24° to 38°, with overnight lows between 12° and 28°. The average high for December is 31° with an average low of 22°. 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 Downtown. See also: January | February | March.