nomadseason

March Weather in Washington, United States

Last updated: June 24, 2025

In March, the average temperature in Washington, United States is a mild 9°C (49°F). Temperatures can swing from as low as -5°C (24°F) to a warm 27°C (81°F). During this time, you can expect approximately 48 mm (1.9 in) of precipitation over the course of 8 days, contributing to an average humidity of 72%. 🌧️

March Temperature in Washington

In March in Washington, the average temperature is 9°C (49°F). Maximum temperatures can reach 27°C (81°F), while minimum temperatures can drop as low as -5°C (24°F). Be prepared for a wide range of weather conditions if you're planning to visit during this time.

March Weather in Washington: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Washington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Washington, March typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec384149596780858375584839
Data source: Temperature data for Washington generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Washington

In Washington in March, the precipitation amount is 48 mm (1.9 in) over a span of 8 days.

March Precipitation Trends in Washington

The chart displays monthly precipitation patterns in Washington, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Washington, March typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec484248121619105132935
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Washington

In Washington in March, humidity is 72%. With an average temperature of 9°C (49°F), this humidity feels like a chilly blanket wrapped around you, making travel feel damp and somewhat uncomfortable as you navigate the streets, heightening your awareness of every breeze.

March Average Humidity in Washington

This chart illustrates the average monthly humidity levels in Washington, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Washington is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%82%72%62%45%34%30%31%47%62%77%80%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Washington

In Washington in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Washington.

Maximum UV Index Levels in Washington for March

The chart shows the monthly maximum UV Index (UVI) for Washington in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Washington typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Washington March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How March Weather in Washington Compares to Other Months

Weather in Washington varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Washington, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Washington, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)48 mm (1.9 inches)80%moderate
February Weather5°C (41°F)42 mm (1.7 inches)82%high
March Weather9°C (49°F)48 mm (1.9 inches)72%very high
April Weather15°C (59°F)12 mm (0.5 inches)62%very high
May Weather19°C (67°F)16 mm (0.6 inches)45%extreme
June Weather27°C (80°F)1 mm (0.0 inches)34%extreme
July Weather29°C (85°F)9 mm (0.3 inches)30%extreme
August Weather28°C (83°F)10 mm (0.4 inches)31%extreme
September Weather24°C (75°F)5 mm (0.2 inches)47%very high
October Weather15°C (59°F)13 mm (0.5 inches)62%high
November Weather9°C (49°F)29 mm (1.1 inches)77%moderate
December Weather4°C (39°F)35 mm (1.4 inches)80%moderate

Compare Washington's Climate with Cities Worldwide