S
M
T
W
T
F
S
29
68°
45°
30
66°
48°
1
64°
40°
2
63°
41°
3
63°
42°
4
64°
41°
5
65°
42°
6
64°
41°
7
63°
40°
8
64°
41°
9
63°
40°
10
64°
44°
11
66°
43°
12
68°
44°
13
66°
42°
14
67°
42°
15
68°
43°
16
68°
44°
17
69°
46°
18
68°
50°
19
66°
51°
20
68°
52°
21
72°
52°
22
64°
47°
23
62°
46°
24
63°
51°
25
66°
44°
26
61°
45°
27
66°
44°
28
67°
40°
29
61°
39°
30
60°
42°
31
62°
42°
1
60°
41°
2
Hist. Avg.
66°
45°
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 60° to 72°, with overnight lows between 39° and 52°. The average high for December is 65° 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.
