S
M
T
W
T
F
S
29
49°
28°
30
47°
27°
1
49°
27°
2
52°
26°
3
48°
26°
4
50°
30°
5
54°
28°
6
52°
24°
7
49°
26°
8
49°
21°
9
43°
23°
10
44°
24°
11
48°
25°
12
50°
30°
13
53°
30°
14
52°
25°
15
42°
23°
16
43°
23°
17
44°
22°
18
44°
24°
19
46°
25°
20
49°
33°
21
48°
25°
22
43°
21°
23
42°
24°
24
43°
23°
25
45°
23°
26
43°
32°
27
42°
22°
28
52°
25°
29
51°
21°
30
Hist. Avg.
36°
18°
31
Hist. Avg.
36°
18°
1
Hist. Avg.
38°
21°
2
Hist. Avg.
38°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Summerhaven
Summerhaven's December 2026 forecast shows daily high temperatures ranging from 42° to 54°, with overnight lows between 21° and 33°. The average high for December is 47° with an average low of 25°. 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 Summerhaven. See also: January | February | March.
