S
M
T
W
T
F
S
29
47°
30°
30
44°
24°
1
33°
17°
2
31°
14°
3
35°
28°
4
37°
28°
5
34°
26°
6
34°
21°
7
30°
16°
8
29°
18°
9
33°
18°
10
37°
26°
11
38°
25°
12
41°
24°
13
39°
25°
14
35°
24°
15
36°
22°
16
36°
20°
17
35°
16°
18
32°
13°
19
31°
9°
20
26°
7°
21
24°
21°
22
34°
20°
23
35°
15°
24
35°
6°
25
29°
17°
26
29°
22°
27
36°
20°
28
35°
19°
29
33°
12°
30
33°
15°
31
30°
3°
1
30°
1°
2
23°
10°
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 23° to 47°, with overnight lows between 1° and 30°. The average high for December is 34° 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 Menlo. See also: January | February | March.
