Average temperatures, rainfall and packing tips for Phoenix, United States in January
January in Phoenix is typically mild, with average daytime highs around 17°C and nights near 5°C. It is usually the coldest month of the year in Phoenix.
Expect some rain: around 45 mm falls in Phoenix during January on average.
If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.
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In January, Phoenix averages a daytime high of about 17°C and a night-time low of around 5°C, based on recent historical data. That makes it the coldest month of the year there.
Expect some rain: around 45 mm falls in Phoenix during January on average.
January is a workable time to visit Phoenix, with mild days - just pack accordingly. If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.