Hourly Weather Forecast - Mercer Island, WA

12 AM
40°F
10%
1mph
E
Clear
Humidity
82%
Feels like
40°F
Dew Point
35°F
1 AM
38°F
10%
1mph
E
Clear
Humidity
85%
Feels like
38°F
Dew Point
34°F
2 AM
37°F
10%
1mph
E
Clear
Humidity
86%
Feels like
37°F
Dew Point
34°F
3 AM
36°F
10%
1mph
ENE
Clear
Humidity
88%
Feels like
36°F
Dew Point
33°F
4 AM
35°F
0%
1mph
ENE
Clear
Humidity
89%
Feels like
35°F
Dew Point
33°F
5 AM
35°F
0%
1mph
ENE
Clear
Humidity
89%
Feels like
35°F
Dew Point
32°F
6 AM
35°F
0%
2mph
ENE
Clear
Humidity
89%
Feels like
35°F
Dew Point
31°F
6:57 AM
7 AM
35°F
0%
2mph
E
Sunny
Humidity
86%
Feels like
35°F
Dew Point
31°F
8 AM
37°F
0%
2mph
ENE
Sunny
Humidity
81%
Feels like
37°F
Dew Point
32°F
9 AM
40°F
10%
2mph
NE
Sunny
Humidity
73%
Feels like
40°F
Dew Point
32°F
10 AM
44°F
10%
2mph
NNE
Mostly Sunny
Humidity
67%
Feels like
44°F
Dew Point
33°F
11 AM
47°F
10%
2mph
N
Partly Cloudy
Humidity
61%
Feels like
47°F
Dew Point
35°F
12 PM
50°F
10%
2mph
N
Partly Cloudy
Humidity
57%
Feels like
50°F
Dew Point
36°F
1 PM
53°F
10%
3mph
NNW
Partly Cloudy
Humidity
53%
Feels like
53°F
Dew Point
36°F
2 PM
55°F
10%
3mph
NNW
Partly Cloudy
Humidity
50%
Feels like
55°F
Dew Point
37°F
3 PM
56°F
10%
3mph
NNW
Partly Cloudy
Humidity
49%
Feels like
56°F
Dew Point
38°F
4 PM
57°F
10%
3mph
NNW
Mostly Cloudy
Humidity
49%
Feels like
57°F
Dew Point
38°F
5 PM
56°F
10%
3mph
NNW
Cloudy
Humidity
51%
Feels like
56°F
Dew Point
38°F
6 PM
54°F
0%
3mph
NNW
Cloudy
Humidity
53%
Feels like
54°F
Dew Point
37°F
7 PM
51°F
0%
2mph
NNW
Mostly Cloudy
Humidity
58%
Feels like
51°F
Dew Point
37°F
7:31 PM
8 PM
49°F
0%
2mph
N
Partly Cloudy
Humidity
63%
Feels like
49°F
Dew Point
37°F
9 PM
47°F
0%
2mph
N
Partly Cloudy
Humidity
69%
Feels like
47°F
Dew Point
37°F
10 PM
46°F
0%
2mph
NNE
Partly Cloudy
Humidity
74%
Feels like
46°F
Dew Point
38°F
11 PM
44°F
0%
2mph
NNE
Partly Cloudy
Humidity
77%
Feels like
44°F
Dew Point
37°F

Today's Severe Weather Outlook

Dangerous Spring Storms Take Aim at Ohio Valley, Mid-Atlantic

Spring is here and Mother Nature is set to bring dangerous thunderstorms to parts of the Great Lakes, Ohio Valley and Mid-Atlantic.

Today's High Temperature Outlook

Summer-Like Heat Bakes the Southern U.S.

Weekend Weather Outlook

Today's Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

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