March Weather in Vashon, United States

Last updated: June 24, 2025

In March, the average temperature in Vashon, United States hovers around 8°C (46°F), with a minimum dipping to 0°C (32°F) and a maximum peaking at 21°C (69°F). Expect 109 mm (4.3 in) of precipitation spread across 16 days, coupled with an average humidity level of 85%. Stay prepared for a changeable and moist climate!

March Temperature in Vashon

In March in Vashon, the average temperature is 8°C (46°F). The maximum can reach 21°C (69°F), while the minimum can dip as low as 0°C (32°F). This climate makes it a great time for travelers to explore the beauty of Vashon while enjoying mild weather.

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

The chart illustrates March temperature patterns in Vashon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vashon, March typically has an average temperature of 8°C (46°F), with highs reaching up to 21°C (69°F) and lows dropping to around 0°C (32°F).

Data source: Temperature data for Vashon generated using information from the Copernicus Climate Change Service.

March Precipitation in Vashon

In Vashon in March, the precipitation amount is 109 mm (4.3 in) spread over 16 days.

March Precipitation Trends in Vashon

The chart displays monthly precipitation patterns in Vashon, 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 Vashon, March typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in Vashon

In Vashon in March humidity is 85%. With an average temperature of 8°C (46°F), this humidity feels like a cold, damp embrace that can leave travelers feeling chilled and uncomfortable, making outdoor exploration less appealing and encouraging the search for cozy indoor activities instead.

March Average Humidity in Vashon

This chart illustrates the average monthly humidity levels in Vashon, 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 Vashon is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Vashon

In Vashon in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Vashon.

Maximum UV Index Levels in Vashon for March

The chart shows the monthly maximum UV Index (UVI) for Vashon 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 Vashon typically reaches 5, which falls under the moderate exposure category.

Data source: Vashon 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 Vashon Compares to Other Months

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

This table compares monthly weather conditions in Vashon, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	160 mm (6.3 inches)	86%	low
February Weather	5°C (42°F)	142 mm (5.6 inches)	84%	moderate
March Weather	8°C (46°F)	109 mm (4.3 inches)	85%	moderate
April Weather	10°C (50°F)	97 mm (3.8 inches)	83%	high
May Weather	14°C (57°F)	60 mm (2.4 inches)	84%	very high
June Weather	17°C (62°F)	55 mm (2.2 inches)	84%	very high
July Weather	20°C (67°F)	17 mm (0.7 inches)	82%	very high
August Weather	20°C (68°F)	17 mm (0.7 inches)	73%	very high
September Weather	17°C (63°F)	84 mm (3.3 inches)	74%	high
October Weather	12°C (53°F)	128 mm (5.0 inches)	83%	moderate
November Weather	9°C (48°F)	161 mm (6.3 inches)	86%	low
December Weather	6°C (43°F)	177 mm (7.0 inches)	87%	low