Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
March
Weather in March
Temperature
At the onset of March, Mercer Island records an average high-temperature of a cool 50.5°F (10.3°C), showing little deviation from the preceding month. Throughout March, Mercer Island anticipates an average low-temperature of 36.9°F (2.7°C).Humidity
In Mercer Island, the average relative humidity in March is 83%.Rainfall
In March, the rain falls for 13.7 days. Throughout March, 1.02" (26mm) of precipitation is accumulated. Throughout the year, in Mercer Island, there are 119.1 rainfall days, and 11.97" (304mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Mercer Island. March is the last month it regularly snows in Mercer Island. During 1 snowfall days, in March, Mercer Island aggregates 0.31" (8mm) of snow. In Mercer Island, during the entire year, snow falls for 7 days and aggregates up to 3.27" (83mm) of snow.Daylight
In March, the average length of the day in Mercer Island is 11h and 57min.On the first day of March, sunrise is at 6:47 am and sunset at 5:54 pm PST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:38 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.
Sunshine
In March, the average sunshine is 6.3h.UV index
In Mercer Island, Washington, the average daily maximum UV index in March is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 3 in March suggests the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mercer Island in March?
What is the average humidity in March in Mercer Island?
How much does it rain in Mercer Island in March?
What is the last month it snows in Mercer Island?
How many hours of daylight does Mercer Island have in March?
What time are sunrise and sunset in March in Mercer Island?
When does Daylight Saving Time (DST) start in March in Mercer Island?
How many hours of sunshine does Mercer Island have in March?
How high is the UV index in March in Mercer Island?
Average temperature in March
Mercer Island, WA
- Average high temperature in March: 50.5°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in March: 36.9°F
The month with the highest average low temperature is August (53.4°F).
The coldest month (with the lowest average low temperature) is February (34.5°F).
Average pressure in March
Mercer Island, WA
- Average pressure in March: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in March
Mercer Island, WA
- Average wind speed in March: 5.1mph
The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in March
Mercer Island, WA
- Average humidity in March: 83%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (69%).
Average rainfall in March
Mercer Island, WA
- Average rainfall in March: 1.02"
The wettest month (with the highest rainfall) is December (2.01").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in March
Mercer Island, WA
- Average rainfall days in March: 13.7 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in March
Mercer Island, WA
- Average snowfall in March: 0.31"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Mercer Island, WA
- Average snowfall days in March: 1 days
The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
Mercer Island, WA
- Average daylight in March: 11h and 5min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in March: 6h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in March
Mercer Island, WA
- Average sunshine days in March: 15.8 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in March
Mercer Island, WA
- Average UV index in March: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in March
Mercer Island, WA
- Average cloud cover in March: 53
The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in March
Mercer Island, WA
- Average visibility in March: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).