S
M
T
W
T
F
S
29
65°
46°
30
67°
51°
1
65°
52°
2
66°
51°
3
68°
47°
4
68°
48°
5
66°
48°
6
67°
45°
7
70°
43°
8
65°
45°
9
65°
44°
10
66°
43°
11
67°
45°
12
66°
46°
13
67°
47°
14
61°
44°
15
62°
39°
16
60°
39°
17
61°
40°
18
64°
40°
19
63°
49°
20
62°
45°
21
Hist. Avg.
65°
44°
22
Hist. Avg.
65°
44°
23
Hist. Avg.
65°
44°
24
Hist. Avg.
65°
44°
25
Hist. Avg.
65°
44°
26
Hist. Avg.
65°
44°
27
Hist. Avg.
65°
44°
28
Hist. Avg.
65°
44°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
66°
45°
31
Hist. Avg.
66°
45°
1
Hist. Avg.
66°
45°
2
Hist. Avg.
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Phoenix
Phoenix's December 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 39° and 52°. The average high for December is 65° with an average low of 45°. 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.
