March weather forecast and climate
Washington, DC

Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington monument in DC, USA
Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington monument in DC, USA
Spring starts in March and is mild, with a daily average high temperature in the region of 55°F (12.8°C). Blooming flowers along the National Mall are a joy to both tourists and locals.
Spring breaks and the end of the frigid cold add to the crowds in Washington, D.C., in March. Humidity levels drop down, but a light jacket is advisable as the rain is unpredictable. Better, be equipped with some warm clothes as there is always a possibility of an odd cold wave or two.

What is the average temperature in March in Washington?

In Washington, in March, the average high-temperature is 55.9°F (13.3°C), and the average low-temperature is 37.6°F (3.1°C).
Average temperature in March - Washington, DC
  • Average high temperature in March: 13.3°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (6.3°C).

  • Average low temperature in March: 3.1°C

The month with the highest average low temperature is July (21.7°C).
The coldest month (with the lowest average low temperature) is January (-1.9°C).

Average humidity in March - Washington, DC
  • Average humidity in March: 58.6%

The month with the highest relative humidity is September (69.7%).
The month with the lowest relative humidity is April (58%).

Average rainfall in March - Washington, DC
  • Average rainfall in March: 88.4mm

The wettest month (with the highest rainfall) is May (101.3mm).
The driest month (with the lowest rainfall) is February (66.5mm).

Average rainfall days in March - Washington, DC
  • Average rainfall days in March: 10.5 days

The month with the highest number of rainy days is May (11.1 days).
The month with the lowest number of rainy days is October (7.7 days).

Average snowfall in March - Washington, DC
  • Average snowfall in March: 33mm

The month with the highest snowfall is February (144.8mm).
Months with the lowest snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in March - Washington, DC
  • Average snowfall days in March: 0.9 days

The month with the highest number of snowfall days is January (3 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in March / Average sunshine in March - Washington, DC
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in March: 6.6h

The month with most sunshine is June (Average sunshine: 9.4h).
The month with least sunshine is December (Average sunshine: 4.3h).

Average UV index in March - Washington, DC
  • Average UV index in March: 5

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).

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