S
M
T
W
T
F
S
29
64°
47°
30
64°
46°
1
65°
44°
2
65°
40°
3
61°
40°
4
61°
41°
5
62°
42°
6
64°
45°
7
67°
47°
8
70°
47°
9
70°
48°
10
73°
49°
11
71°
53°
12
71°
49°
13
68°
53°
14
67°
46°
15
61°
40°
16
58°
40°
17
60°
41°
18
61°
40°
19
62°
41°
20
63°
42°
21
65°
44°
22
68°
41°
23
68°
41°
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 58° to 73°, with overnight lows between 40° and 53°. 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.
