S
M
T
W
T
F
S
29
64°
47°
30
65°
45°
1
64°
44°
2
65°
46°
3
64°
46°
4
67°
45°
5
69°
44°
6
68°
45°
7
70°
45°
8
65°
44°
9
66°
44°
10
70°
49°
11
70°
51°
12
69°
49°
13
68°
49°
14
69°
47°
15
67°
45°
16
69°
44°
17
65°
43°
18
64°
44°
19
65°
45°
20
68°
44°
21
66°
44°
22
67°
45°
23
65°
45°
24
67°
47°
25
69°
49°
26
69°
42°
27
65°
44°
28
63°
48°
29
66°
49°
30
70°
49°
31
73°
48°
1
70°
51°
2
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Downey-Norwalk
Downey-Norwalk's December 2026 forecast shows daily high temperatures ranging from 63° to 73°, with overnight lows between 42° and 51°. The average high for December is 67° with an average low of 46°. 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 Downey-Norwalk. See also: January | February | March.
