Weather forecast for 10 days
Mercer Island, WA

Weather forecast for the weekend

Saturday, Mar 29.

Mostly Cloudy
6:50 am

7:36 pm
PDT
Mostly Cloudy
54°F / 37°F
  • Wind: 7mph S
  • Humidity: 73%
  • Precip. probability: 23%
  • Precipitation: 0"
  • UV index: 3
Tomorrow, in Mercer Island, expect a cloud-dominated atmosphere throughout.
Temperatures will oscillate between a fresh 53.6°F at their highest and an icy 37.4°F at their lowest.
March's typical peak of 50.5°F is predicted to be mirrored in the day’s high.
Sunrise will be at 6:50 am and sunset at 7:36 pm; tomorrow's daylight will last for 12h and 46min.

Sunday, Mar 30.

Partly Cloudy
6:48 am

7:37 pm
PDT
Partly Cloudy
63°F / 41°F
  • Wind: 11mph ENE
  • Humidity: 54%
  • Precip. probability: 10%
  • Precipitation: 0"
  • UV index: 3
On Sunday, in Mercer Island, intermittent cloud cover is expected, allowing for some sunshine.
The maximum temperature will be an enjoyable 62.6°F, while the minimum temperature will be a cold 41°F.
On Sunday, the predicted high temperature is higher and fits better with April's average than with March's usual.
Sunrise will be at 6:48 am and sunset at 7:37 pm; the daylight will last for 12h and 49min.

Frequently asked questions

What is the weather forecast for Mercer Island for Sunday?
On Sunday, thin clouds will pass through at times, but overall, it will remain bright.
What will be the maximum temperature on Sunday?
On Sunday, the highest temperature will be 62.6°F, while the lowest temperature will be 41°F.
What is the weather forecast for Mercer Island for the next ten days?
In Mercer Island, predominantly cloud-filled and occasionally rain-filled weather is expected for the next ten days.
Will it rain in the next ten days?
Rainfall is forecasted for Monday through Wednesday and next Sunday in Mercer Island. With light precipitation of 0.24", Wednesday will be the day with the most rainfall.
How warm will it be in the next ten days?
The maximum temperature will range between 50°F and 66.2°F, while the minimum temperature will range between 37.4°F and 46.4°F.
What will be the warmest and the coldest days in Mercer Island?
Next Sunday will be the warmest day, with a maximum temperature of 66.2°F. Wednesday will be the coldest day, with a maximum temperature of 50°F.

Long-term weather forecast

FriMar 28.
  • min.
  • 41°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph SSE
  • Humidity: 87%
  • UV index: 0
  • Precip. probability: 16%
  • Precipitation: 0"
  • 6:52 am 7:34 pm PDT
SatMar 29.
  • 54°F
  • 37°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph S
  • Humidity: 73%
  • UV index: 3
  • Precip. probability: 23%
  • Precipitation: 0"
  • 6:50 am 7:36 pm PDT
SunMar 30.
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph ENE
  • Humidity: 54%
  • UV index: 3
  • Precip. probability: 10%
  • Precipitation: 0"
  • 6:48 am 7:37 pm PDT
MonMar 31.
  • 54°F
  • 39°F
Showers
Showers
  • Wind: 8mph SSW
  • Humidity: 69%
  • UV index: 3
  • Precip. probability: 62%
  • Precipitation: 0.16"
  • 6:46 am 7:39 pm PDT
TueApr 1.
  • 55°F
  • 41°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 7mph SW
  • Humidity: 68%
  • UV index: 4
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 6:44 am 7:40 pm PDT
WedApr 2.
  • 50°F
  • 39°F
Showers
Showers
  • Wind: 9mph SSW
  • Humidity: 73%
  • UV index: 2
  • Precip. probability: 63%
  • Precipitation: 0.24"
  • 6:42 am 7:42 pm PDT
ThuApr 3.
  • 52°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph WSW
  • Humidity: 69%
  • UV index: 4
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:40 am 7:43 pm PDT
FriApr 4.
  • 57°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph N
  • Humidity: 61%
  • UV index: 4
  • Precip. probability: 14%
  • Precipitation: 0"
  • 6:38 am 7:44 pm PDT
SatApr 5.
  • 63°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph NNE
  • Humidity: 58%
  • UV index: 4
  • Precip. probability: 15%
  • Precipitation: 0"
  • 6:36 am 7:46 pm PDT
SunApr 6.
  • 66°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph E
  • Humidity: 56%
  • UV index: 4
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 6:34 am 7:47 pm PDT
It is expected that primarily cloud-filled and occasionally showery weather is expected.
Rainfall is anticipated on Monday through Wednesday and next Sunday.
Substantial differences in temperature are forecasted throughout the forecast window. The temperature is expected to swing from 50°F up to 66.2°F, while the lowest temperature will be between 37.4°F and 46.4°F.
Expect the warmest day on next Sunday, with temperatures peaking at 66.2°F; Wednesday will be the coldest day, with the highest temperature of 50°F.
Updated: Mar 29, 2025 @ 06:34:50 UTC
Published by: Weather U.S. | About Us
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