S
M
T
W
T
F
S
29
42°
25°
30
44°
24°
1
44°
28°
2
43°
30°
3
52°
27°
4
45°
29°
5
43°
25°
6
42°
23°
7
39°
20°
8
38°
21°
9
38°
22°
10
41°
27°
11
41°
26°
12
39°
19°
13
39°
19°
14
Hist. Avg.
46°
25°
15
Hist. Avg.
46°
25°
16
Hist. Avg.
46°
24°
17
Hist. Avg.
45°
24°
18
Hist. Avg.
45°
24°
19
Hist. Avg.
45°
24°
20
Hist. Avg.
45°
24°
21
Hist. Avg.
45°
24°
22
Hist. Avg.
45°
24°
23
Hist. Avg.
44°
24°
24
Hist. Avg.
44°
24°
25
Hist. Avg.
44°
23°
26
Hist. Avg.
44°
23°
27
Hist. Avg.
44°
23°
28
Hist. Avg.
44°
23°
29
Hist. Avg.
44°
23°
30
Hist. Avg.
44°
23°
31
Hist. Avg.
44°
23°
1
Hist. Avg.
44°
23°
2
Hist. Avg.
44°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Montebello
Montebello's December 2026 forecast shows daily high temperatures ranging from 38° to 52°, with overnight lows between 19° and 30°. The average high for December is 42° with an average low of 24°. 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 Montebello. See also: January | February | March.
