S
M
T
W
T
F
S
29
72°
43°
30
71°
42°
1
69°
44°
2
66°
46°
3
63°
45°
4
63°
41°
5
64°
39°
6
66°
41°
7
73°
43°
8
73°
41°
9
71°
39°
10
72°
40°
11
71°
40°
12
69°
42°
13
70°
44°
14
70°
44°
15
69°
39°
16
66°
44°
17
67°
40°
18
65°
44°
19
64°
45°
20
67°
45°
21
67°
43°
22
68°
38°
23
62°
43°
24
62°
45°
25
67°
46°
26
67°
46°
27
69°
45°
28
69°
43°
29
68°
37°
30
66°
39°
31
65°
40°
1
66°
37°
2
64°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Moreno Valley
Moreno Valley's December 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 37° and 46°. The average high for December is 67° with an average low of 42°. 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 Moreno Valley. See also: January | February | March.