S
M
T
W
T
F
S
29
49°
29°
30
49°
27°
1
48°
28°
2
48°
27°
3
49°
27°
4
49°
28°
5
47°
26°
6
48°
27°
7
47°
26°
8
46°
26°
9
48°
27°
10
52°
28°
11
54°
30°
12
55°
29°
13
54°
30°
14
52°
29°
15
48°
29°
16
53°
27°
17
47°
26°
18
46°
27°
19
47°
28°
20
50°
28°
21
51°
26°
22
48°
27°
23
47°
28°
24
52°
29°
25
49°
31°
26
52°
33°
27
49°
25°
28
47°
29°
29
46°
32°
30
54°
29°
31
51°
28°
1
52°
33°
2
53°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Blue Diamond
Blue Diamond's December 2026 forecast shows daily high temperatures ranging from 46° to 55°, with overnight lows between 25° and 35°. The average high for December is 50° with an average low of 28°. 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 Blue Diamond. See also: January | February | March.
