Phoenix
Arizona, USA
Long-term weather forecast
Long-term weather forecast
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March weather forecast and Climate
Phoenix, AZ

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The city of Phoenix, Arizona at dusk
The city of Phoenix, Arizona at dusk
There is a sharp drop in humidity in March to 29% and with it comes more sunshine hours across the day of up to eleven. More extended sunshine makes the temperatures even hotter ranging between 46.4°F (8°C) and 75.2°F (24°C).
That creates a perfect time to visit the beaches and bask away in the sun. Even better, expect a few showers of rain, averaging 1" (25.4mm) in March, in the afternoons to help cool the sun's heat.
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  • The average high temperature in March: 76.9°F

The warmest month (with the highest average high temperature) is July (106.1°F).
The month with the lowest average high temperature is December (66°F).

  • The average low temperature in March: 53.5°F

The month with the highest average low temperature is July (83.5°F).
The coldest month (with the lowest average low temperature) is December (44.8°F).

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  • The average humidity in March: 39.3%

The month with the highest relative humidity is December (51.8%).
The month with the lowest relative humidity is June (19.4%).

  • The average rainfall in March: 1"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the lowest rainfall) is June (0").

  • The average rainfall days in March: 3.9 days

The month with the highest number of rainy days is August (5 days).
The month with the lowest number of rainy days is June (0.5 days).

  • The average daylight in March: 12h

Months with the longest days are May, June and July (Average daylight: 14h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in March: 10.3h

The month with most sunshine is June (Average sunshine: 13.6h).
The month with least sunshine is December (Average sunshine: 7.9h).

  • The average UV index in March: 6

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).

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