Weather in Phoenix in January
January in Phoenix is cool with average temperatures around 12.4°C (54.3°F). Light rainfall with only 33mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
19.4°C
66.9°F
Low
5.4°C
41.7°F
Precipitation
33 mm
1.3 inches
~4 rainy days
Conditions
Humidity
46%