March weather forecastPhoenix, AZ

March
Weather in March
March witnesses a continued gradual increase in temperature as Phoenix moves further into spring. This month exposes Phoenix's desert characteristics with climbing temperatures and falling humidity levels. The city welcomes the warmer 76.1°F (24.5°C) average high temperature, providing bounteous warmth without the intense heat of summer. March offers ample sunshine and decreased rain, making it a great time for outdoor enthusiasts. Continuing the warming trend, the city anticipates the arrival of the impending summer season.Temperature
As March arrives in Phoenix, a slight rise in the average high-temperature is observed, moving from an enjoyable 67.6°F (19.8°C) in February to a moderately hot 76.1°F (24.5°C). Throughout the nights in March, Phoenix experiences an average low-temperature of 55.9°F (13.3°C).Humidity
The average relative humidity in March is 29%.Rainfall
In March, the rain falls for 3.5 days. Throughout March, 0.43" (11mm) of precipitation is accumulated. Throughout the year, in Phoenix, there are 44.6 rainfall days, and 5.04" (128mm) of precipitation is accumulated.Snowfall
In Phoenix, snow does not fall in January through August, October through December.Daylight
In Phoenix, the average length of the day in March is 12h and 0min.On the first day of the month, sunrise is at 6:55 am and sunset at 6:25 pm. On the last day of March, sunrise is at 6:15 am and sunset at 6:48 pm MST.
Sunshine
In Phoenix, the average sunshine in March is 9.2h.UV index
The average daily maximum UV index in March is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 5 during March, leads to the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Phoenix, AZ
- Average high temperature in March: 76.1°F
The warmest month (with the highest average high temperature) is July (103.6°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in March: 55.9°F
The month with the highest average low temperature is August (84.7°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in March
Phoenix, AZ
- Average pressure in March: 29.97"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in March
Phoenix, AZ
- Average wind speed in March: 5.3mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity in March
Phoenix, AZ
- Average humidity in March: 29%
The month with the highest relative humidity is December (43%).
The month with the lowest relative humidity is June (16%).
Average rainfall in March
Phoenix, AZ
- Average rainfall in March: 0.43"
The wettest month (with the highest rainfall) is July (0.75").
The driest months (with the least rainfall) are May and June (0.08").
Average rainfall days in March
Phoenix, AZ
- Average rainfall days in March: 3.5 days
The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in March
Phoenix, AZ
- Average snowfall in March: 0"
The month with the highest snowfall is September (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in March
Phoenix, AZ
- Average snowfall days in March: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in March /
Average sunshine in March
Phoenix, AZ
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in March: 9h and 12min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in March
Phoenix, AZ
- Average sunshine days in March: 28.3 days
The month with the most sunshine days is May (29.2 days).
The month with the least sunshine days is July (21.1 days).
Average UV index in March
Phoenix, AZ
- Average UV index in March: 5
The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in March
Phoenix, AZ
- Average cloud cover in March: 15
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in March
Phoenix, AZ
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





