S
M
T
W
T
F
S
29
62°
45°
30
67°
49°
1
69°
48°
2
70°
39°
3
71°
38°
4
60°
36°
5
59°
37°
6
60°
39°
7
63°
41°
8
66°
46°
9
57°
38°
10
69°
48°
11
Hist. Avg.
63°
41°
12
Hist. Avg.
63°
41°
13
Hist. Avg.
63°
41°
14
Hist. Avg.
62°
40°
15
Hist. Avg.
62°
40°
16
Hist. Avg.
62°
40°
17
Hist. Avg.
62°
40°
18
Hist. Avg.
62°
40°
19
Hist. Avg.
61°
40°
20
Hist. Avg.
61°
40°
21
Hist. Avg.
61°
39°
22
Hist. Avg.
61°
39°
23
Hist. Avg.
61°
39°
24
Hist. Avg.
60°
39°
25
Hist. Avg.
60°
39°
26
Hist. Avg.
60°
38°
27
Hist. Avg.
60°
38°
28
Hist. Avg.
60°
38°
29
Hist. Avg.
60°
38°
30
Hist. Avg.
60°
38°
31
Hist. Avg.
60°
38°
1
Hist. Avg.
60°
38°
2
Hist. Avg.
60°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Summerdale
Summerdale's December 2026 forecast shows daily high temperatures ranging from 57° to 71°, with overnight lows between 36° and 49°. The average high for December is 64° 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 Summerdale. See also: January | February | March.
