S
M
T
W
T
F
S
29
64°
44°
30
63°
43°
1
62°
41°
2
61°
41°
3
63°
42°
4
62°
41°
5
62°
41°
6
61°
42°
7
61°
41°
8
60°
39°
9
60°
40°
10
63°
41°
11
69°
42°
12
67°
43°
13
68°
44°
14
64°
41°
15
63°
39°
16
63°
40°
17
62°
39°
18
61°
38°
19
60°
39°
20
62°
39°
21
64°
40°
22
63°
39°
23
62°
39°
24
62°
40°
25
64°
42°
26
64°
44°
27
66°
40°
28
61°
40°
29
63°
41°
30
64°
42°
31
68°
42°
1
68°
44°
2
69°
47°
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 69°, with overnight lows between 38° and 47°. The average high for December is 63° with an average low of 41°. 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.
