Phoenix weather in March
In March, Phoenix has an average high of 26 °C78 °F and an average low of 10 °C50 °F, with about 21 mm0.8 in of precipitation. It is the 8th warmest month of the year and ranks 7th for precipitation.
How March compares with other months
Compared with February, March is 4 °C7.1 °F warmer on average and drier by 11 mm0.4 in. Compared with April, March is 3.8 °C6.8 °F cooler on average and wetter by 13 mm0.5 in. Daylight lasts about 11.9 hours around the middle of the month. Average relative humidity is 38% and the average cloud amount 34%.
Is March a good time to visit Phoenix?
Yes — March is one of the most comfortable months to visit Phoenix by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in March
For Phoenix in March, pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
March in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Phoenix | 2678 | 1050 | 210.8 |
| Peoria | 2678 | 1050 | 160.6 |
| Mesa | 2578 | 1049 | 210.8 |
| Tucson | 2476 | 847 | 140.6 |
| Yuma | 2780 | 1051 | 80.3 |
| Nogales | 2171 | 642 | 140.5 |
| San Luis Río Colorado | 2781 | 1050 | 80.3 |
| Mexicali | 2781 | 1152 | 130.5 |
| Henderson | 2373 | 846 | 120.5 |
Nearby places that are more than 1 °C1.8 °F warmer in March: Mexicali; cooler: Tucson, Nogales and Henderson.
Other months in Phoenix
- January19 °C67 °F / 6 °C42 °F
- February21 °C70 °F / 7 °C44 °F
- March26 °C78 °F / 10 °C50 °F
- April30 °C86 °F / 13 °C56 °F
- May35 °C96 °F / 18 °C65 °F
- June42 °C107 °F / 24 °C76 °F
- July42 °C107 °F / 28 °C83 °F
- August41 °C105 °F / 27 °C81 °F
- September38 °C101 °F / 24 °C75 °F
- October32 °C90 °F / 17 °C63 °F
- November25 °C77 °F / 11 °C51 °F
- December19 °C66 °F / 5 °C42 °F
Frequently asked questions
How warm is Phoenix in March?
In March the average high in Phoenix is 26 °C (78 °F) and the average low is 10 °C (50 °F).
Does it rain a lot in Phoenix in March?
On average about 21 mm (0.8 in) of precipitation falls in March; it ranks 7th of the 12 months.
Is March the warmest month in Phoenix?
No. The warmest month in Phoenix is July, with an average high of 42 °C (107 °F). The coldest month is December, with an average low of 5 °C (42 °F).
How long is the day in Phoenix in March?
In the middle of March the day in Phoenix lasts about 11.9 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Phoenix in March?
The average relative humidity in March is about 38%. This is a long-term average for the whole day.
How cloudy is Phoenix in March?
On average about 34% of the sky is covered by cloud in March. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 494 m, while Phoenix lies at about 331 m. Temperatures on this page were therefore adjusted by +1.1 °C1.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.