S
M
T
W
T
F
S
29
44°
30°
30
44°
29°
1
45°
37°
2
50°
37°
3
48°
35°
4
48°
33°
5
50°
31°
6
50°
31°
7
48°
33°
8
49°
36°
9
49°
36°
10
48°
31°
11
49°
30°
12
48°
32°
13
49°
37°
14
45°
34°
15
52°
34°
16
47°
37°
17
48°
35°
18
49°
36°
19
50°
35°
20
49°
36°
21
47°
37°
22
49°
36°
23
50°
33°
24
47°
30°
25
48°
27°
26
47°
28°
27
42°
27°
28
41°
30°
29
42°
27°
30
42°
35°
31
47°
37°
1
51°
31°
2
50°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Menlo
Menlo's December 2026 forecast shows daily high temperatures ranging from 41° to 52°, with overnight lows between 27° and 37°. The average high for December is 47° with an average low of 33°. 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 Menlo. See also: January | February | March.
