S
M
T
W
T
F
S
28
80°
60°
29
59°
46°
30
61°
40°
31
70°
34°
1
74°
40°
2
91°
46°
3
81°
53°
4
73°
46°
5
77°
52°
6
82°
57°
7
83°
51°
8
78°
58°
9
75°
58°
10
67°
43°
11
61°
35°
12
62°
44°
13
63°
48°
14
74°
44°
15
68°
38°
16
75°
38°
17
59°
40°
18
62°
27°
19
69°
28°
20
61°
47°
21
72°
53°
22
74°
44°
23
72°
64°
24
66°
28°
25
35°
23°
26
42°
20°
27
51°
21°
28
64°
28°
29
71°
32°
30
58°
40°
31
53°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Phoenix
Phoenix's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Phoenix. See also: February | March | April.