S
M
T
W
T
F
S
29
58°
45°
30
58°
44°
1
59°
44°
2
57°
43°
3
57°
45°
4
61°
45°
5
60°
43°
6
60°
42°
7
61°
44°
8
60°
43°
9
55°
43°
10
55°
41°
11
55°
33°
12
56°
37°
13
55°
39°
14
59°
41°
15
62°
44°
16
61°
42°
17
61°
35°
18
56°
43°
19
54°
43°
20
59°
42°
21
59°
35°
22
58°
33°
23
52°
35°
24
53°
42°
25
56°
42°
26
55°
39°
27
54°
38°
28
53°
35°
29
52°
34°
30
52°
32°
31
53°
34°
1
52°
35°
2
53°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Atherton
Atherton's December 2026 forecast shows daily high temperatures ranging from 52° to 62°, with overnight lows between 32° and 45°. The average high for December is 57° with an average low of 40°. 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 Atherton. See also: January | February | March.
