S
M
T
W
T
F
S
29
65°
52°
30
64°
46°
1
63°
43°
2
63°
45°
3
64°
45°
4
63°
43°
5
62°
45°
6
64°
45°
7
69°
51°
8
69°
51°
9
68°
46°
10
61°
45°
11
60°
38°
12
59°
39°
13
62°
40°
14
65°
41°
15
67°
44°
16
69°
45°
17
68°
48°
18
65°
46°
19
64°
51°
20
64°
47°
21
69°
47°
22
67°
38°
23
62°
36°
24
57°
38°
25
59°
40°
26
65°
51°
27
69°
43°
28
63°
49°
29
67°
50°
30
65°
43°
31
60°
38°
1
59°
39°
2
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Phoenix
Phoenix's December 2026 forecast shows daily high temperatures ranging from 57° to 69°, with overnight lows between 36° and 52°. The average high for December is 64° with an average low of 44°. 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 Phoenix. See also: January | February | March.
