S
M
T
W
T
F
S
29
58°
44°
30
57°
34°
1
55°
32°
2
42°
31°
3
43°
31°
4
41°
40°
5
52°
39°
6
54°
32°
7
45°
31°
8
41°
34°
9
43°
31°
10
42°
30°
11
40°
30°
12
41°
29°
13
42°
28°
14
40°
27°
15
37°
25°
16
37°
28°
17
Hist. Avg.
44°
32°
18
Hist. Avg.
44°
32°
19
Hist. Avg.
44°
31°
20
Hist. Avg.
43°
31°
21
Hist. Avg.
43°
31°
22
Hist. Avg.
43°
30°
23
Hist. Avg.
43°
30°
24
Hist. Avg.
42°
30°
25
Hist. Avg.
42°
30°
26
Hist. Avg.
42°
30°
27
Hist. Avg.
42°
29°
28
Hist. Avg.
42°
29°
29
Hist. Avg.
41°
29°
30
Hist. Avg.
41°
29°
31
Hist. Avg.
41°
28°
1
Hist. Avg.
41°
28°
2
Hist. Avg.
41°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Mill Basin
Mill Basin's December 2026 forecast shows daily high temperatures ranging from 37° to 58°, with overnight lows between 25° and 44°. The average high for December is 45° with an average low of 32°. 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 Mill Basin. See also: January | February | March.
