S
M
T
W
T
F
S
29
67°
49°
30
68°
50°
1
64°
49°
2
67°
48°
3
67°
46°
4
71°
50°
5
71°
43°
6
66°
42°
7
65°
45°
8
65°
47°
9
66°
41°
10
64°
45°
11
63°
45°
12
64°
43°
13
64°
42°
14
65°
40°
15
64°
41°
16
64°
41°
17
65°
42°
18
67°
45°
19
69°
41°
20
65°
39°
21
63°
40°
22
64°
41°
23
64°
39°
24
63°
41°
25
64°
41°
26
65°
42°
27
66°
41°
28
67°
40°
29
64°
39°
30
64°
41°
31
64°
42°
1
66°
42°
2
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Temecula
Temecula's December 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 39° and 50°. The average high for December is 65° with an average low of 43°. 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 Temecula. See also: January | February | March.
