S
M
T
W
T
F
S
29
54°
34°
30
49°
33°
1
48°
38°
2
47°
39°
3
54°
35°
4
52°
36°
5
46°
30°
6
48°
27°
7
47°
28°
8
41°
26°
9
42°
26°
10
41°
25°
11
40°
33°
12
47°
30°
13
43°
32°
14
Hist. Avg.
46°
32°
15
Hist. Avg.
46°
31°
16
Hist. Avg.
46°
31°
17
Hist. Avg.
46°
31°
18
Hist. Avg.
45°
31°
19
Hist. Avg.
45°
30°
20
Hist. Avg.
45°
30°
21
Hist. Avg.
44°
30°
22
Hist. Avg.
44°
30°
23
Hist. Avg.
44°
30°
24
Hist. Avg.
44°
29°
25
Hist. Avg.
44°
29°
26
Hist. Avg.
44°
29°
27
Hist. Avg.
43°
29°
28
Hist. Avg.
43°
29°
29
Hist. Avg.
43°
28°
30
Hist. Avg.
43°
28°
31
Hist. Avg.
42°
28°
1
Hist. Avg.
42°
28°
2
Hist. Avg.
42°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Garnet Valley
Garnet Valley's December 2026 forecast shows daily high temperatures ranging from 40° to 54°, with overnight lows between 25° and 39°. The average high for December is 47° with an average low of 31°. 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 Garnet Valley. See also: January | February | March.
