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Mercer Island weather in March (Washington State, United States of America)

Looking to travel to Mercer Island in March? Here's what the weather might have in store during this month.

In March, Mercer Island generally has low temperatures and high rainfall. Anticipate daytime temperatures around 12°C, while night temperatures can drop to 4°C.

Mercer Island in March usually receives high rainfall, averaging around 126 mm for the month. Rain is expected on roughly 21 days.

The area enjoys a balanced 179 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If you prefer dry days with pleasant temperatures, March may not be the ideal month to visit Mercer Island. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Mercer Island climate page with graphs.

 

Mercer Island, monthly averages in March

Min TemperatureMin Temperature 4°C  
Max TemperatureMax Temperature 12°C  
Chance of RainChance of Rain 71%  
PrecipitationPrecipitation 126 mm  
Rainy daysRainy days 21 days  
HumidityHumidity 73% *  
WindspeedWindspeed 18 km/h *  
SunshineSunshine 179 hours *  
Percentage SunshinePercentage Sunshine 48% *  
* Data from: Seattle, the United States of America (15 KM, 9 Miles).

Where to go in the United States of America in March

Find out more about the weather in the United States of America in March and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Mercer Island in March?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in March.

Swimming
5/10
Cycling
5/10
Walking
5/10
Camping
3/10
Outdoor sports
5/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Mercer Island.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.