Hourly Weather Forecast - Mercer Island, WA

12 AM
39°F
10%
1mph
E
Partly Cloudy
Humidity
88%
Feels like
39°F
Dew Point
36°F
1 AM
39°F
10%
1mph
E
Mostly Cloudy
Humidity
87%
Feels like
39°F
Dew Point
35°F
2 AM
39°F
10%
1mph
ESE
Cloudy
Humidity
87%
Feels like
39°F
Dew Point
35°F
3 AM
38°F
10%
1mph
ESE
Cloudy
Humidity
87%
Feels like
38°F
Dew Point
35°F
4 AM
39°F
10%
1mph
ESE
Cloudy
Humidity
88%
Feels like
39°F
Dew Point
35°F
5 AM
39°F
10%
1mph
ESE
Cloudy
Humidity
92%
Feels like
39°F
Dew Point
37°F
6 AM
39°F
10%
1mph
ESE
Mostly Cloudy
Humidity
91%
Feels like
39°F
Dew Point
37°F
7 AM
39°F
10%
1mph
ESE
Mostly Cloudy
Humidity
92%
Feels like
39°F
Dew Point
37°F
7:46 AM
8 AM
40°F
10%
1mph
ESE
Partly Cloudy
Humidity
92%
Feels like
40°F
Dew Point
37°F
9 AM
41°F
10%
1mph
SE
Cloudy
Humidity
90%
Feels like
41°F
Dew Point
38°F
10 AM
42°F
20%
1mph
SE
Cloudy
Humidity
88%
Feels like
42°F
Dew Point
39°F
11 AM
44°F
20%
1mph
S
Cloudy
Humidity
85%
Feels like
44°F
Dew Point
39°F
12 PM
45°F
20%
1mph
WSW
Partly Cloudy
Humidity
82%
Feels like
45°F
Dew Point
40°F
1 PM
46°F
20%
1mph
W
Partly Cloudy
Humidity
79%
Feels like
46°F
Dew Point
40°F
2 PM
46°F
20%
1mph
WNW
Partly Cloudy
Humidity
79%
Feels like
46°F
Dew Point
40°F

Snow Forecast through Saturday

Multiple Snowy Systems Hit Great Lakes, Northeast

A new disturbance will track across the Upper Midwest, central Appalachia, Northeast, and Great Lakes.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide