Comfortably warm, but not overly hot, is the general pattern for March weather at Phoenix, Arizona. Along with the nice temepratures are plenty of dry, sunny skies.

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This page gives detailed information on the typical March temperature, precipitation, sun, humidity, wind and storms for Phoenix.

The temperature and rainfall numbers here are historical averages based on climate data gathered in downtown Phoenix. The rest of the weather measurements are averages at the Phoenix Sky Harbor International Airport, located a few miles southeast of the city center.


78 °F March average high26 °C
54 °F March average low12 °C

In most years, Phoenix averages a daily maximum temperature for March that"s between 74 and 82 degrees Fahrenheit (24 to 28 degrees Celsius). The minimum temperature usually falls between 51 and 56 °F (11 to 13 °C).

The days at Phoenix heat up more quickly during March. By the end of the month, the temperature has climbed around 7 °F (4 °C) above what it was at the start.

13 days80 °F max. or more (27 °C)
8 days50 °F min. or less (10 °C)

Most days in March warm to over 70 °F (21 °C) in Phoenix. The city averages 2 days this month when the thermometer reaches into the 90s °F (over 32 °C). Temperatures above 100 °F (38 °C) only rarely occur during March.

At night, the thermometer dips to 40 °F (4 °C) or below just once every few years on average. March does not normally get cold enough for frost.


1.1 in total precipitation27 mm
4 days of rain

Half the time, Phoenix receives 0.3 to 1.6 inches (7 to 41 mm) of rainfall in March. One in four years has drier weather, while another one in four is wetter.


84 % sunshine14 days clear skies

The sun"s rays reach the ground in Phoenix during 84 percent of daylight hours on average in March, for a total of 312 hours in the month. Typically on 14 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in March at Phoenix lasts for 12 hours a day on average. The shortest day of the month is the 1st with 11 hours and 29 minutes of daylight. By the end of the month, the days have lengthened to 12:31 from sunrise to sunset. These durations can vary by a minute or two from year to year.


39 % March average humidity

The relative humidity in Phoenix during March usually peaks at 56 percent in the morning then drops to 24 percent by late afternoon.

Local Time2 am5 am8 am11 am2 pm5 pm8 pm11 pm
Humidity %5056533425243142


6.6 mph March wind speed average10.6 kph

March is a little windier than most other months in Phoenix.


1 day rainfall of 0.5 inches (13 mm) or more1 day with thunderstorms in March

About once a decade, Phoenix receives an inch (25 mm) or more of rain in one day during March.

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These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.