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