S
M
T
W
T
F
S
29
70°
43°
30
66°
44°
1
64°
45°
2
65°
44°
3
66°
44°
4
65°
45°
5
66°
46°
6
65°
45°
7
66°
44°
8
64°
49°
9
64°
50°
10
65°
50°
11
69°
49°
12
70°
50°
13
69°
49°
14
69°
50°
15
70°
50°
16
71°
49°
17
70°
46°
18
63°
43°
19
62°
50°
20
64°
49°
21
65°
49°
22
63°
46°
23
64°
50°
24
63°
48°
25
65°
44°
26
63°
45°
27
66°
45°
28
65°
44°
29
64°
44°
30
64°
47°
31
63°
42°
1
61°
45°
2
Hist. Avg.
68°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Foothill Ranch
Foothill Ranch's December 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 42° and 50°. The average high for December is 66° with an average low of 47°. 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 Foothill Ranch. See also: January | February | March.
