Weather forecast for todayMercer Island, WA

Weather forecast for today

Current condition 2:16 am PST

  • 45°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 0mphSSW 200°
  • Humidity: 83%
  • Dewpoint: 41°F
  • Pressure: 30.07"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, patches of clouds are drifting across the sky.
The temperature is a frosty 44.6°F. The current temperature is relatively far from today's maximum-anticipated 57.2°F.

Monday Nov 9, 2026

  • 57°F
  • 50°F
PM Rain
PM Rain
  • Precip. probability: 98%
  • Precipitation: 0"
  • Wind: 10mphSE 128°
  • Humidity: 77%
  • UV index: 1
  • Sunrise: 7:05 am PST
  • Sunset: 4:39 pm PST
  • ▼
Today, in Mercer Island, light rain is forecasted in the afternoon.
Minimal precipitation is expected. A slight fluctuation in temperature is predicted, achieving a maximum of a refreshing 57.2°F and dipping to a minimum of a fresh 50°F.
The day's peak of 57.2°F reflects October's seasonal pattern more than November's.
Sunrise will be at 7:05 am and sunset at 4:39 pm; the daylight will last for 9h and 35min.

Hourly overview

Hourly temperatures

Warmest hour: 1 pm 55°C.
Coldest hour: 7 am 45°C.

Chance of precipitation

Highest chance: 3 pm 98%.

Hourly weather forecast

  • 4 am
  • 46°F
  • Feels like:
    46°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphENE 79°
  • Humidity: 81%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 45°F
  • Feels like:
    45°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphE 85°
  • Humidity: 84%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:05 am
  • 8 am
  • 46°F
  • Feels like:
    45°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSE 130°
  • Humidity: 83%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    52°F
Cloudy
Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSE 136°
  • Humidity: 72%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 3mphESE 119°
  • Humidity: 69%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 2 pm
  • 55°F
  • Feels like:
    55°F
Rain
Rain
  • Precip. probability: 87%
  • Precipitation: 0.04"
  • Wind: 4mphESE 113°
  • Humidity: 74%
  • Pressure: 29.85"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 4 pm
  • 54°F
  • Feels like:
    52°F
Rain
Rain
  • Precip. probability: 98%
  • Precipitation: 0.08"
  • Wind: 7mphESE 123°
  • Humidity: 83%
  • Pressure: 29.83"Hg
  • Visibility: 4mi
  • UV index: 0
  • ▼
Sunset: 4:39 pm
  • 6 pm
  • 54°F
  • Feels like:
    52°F
Rain
Rain
  • Precip. probability: 81%
  • Precipitation: 0.04"
  • Wind: 10mphSSE 149°
  • Humidity: 84%
  • Pressure: 29.85"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 8 pm
  • 55°F
  • Feels like:
    52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 10mphS 186°
  • Humidity: 88%
  • Pressure: 29.94"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 8mphS 186°
  • Humidity: 89%
  • Pressure: 30"Hg
  • Visibility: 8mi
  • UV index: 0
  • ▼
Today, in Mercer Island, a combination of gloomy and damp weather is anticipated.
Rain is predicted from 1 pm to 7 pm. The most intense rain will be falling at 3 pm, 4 pm and 7 pm.
The temperature will vary between the lowest temperature of 44.6°F and the highest temperature of 55.4°F. The warmest part of the day will be from noon to 2 pm and at 8 pm.
The day’s peak temperature will reflect October's norm of 58.6°F more than November's 48.6°F. The expected low will be also more alike with what’s typical in October than in November.
Updated: Nov 9, 2026 @ 10:16:49 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (2:16 am PST) in Mercer Island is 44.6°F.

On Monday, expect rainy conditions as the afternoon unfolds.

There is a high possibility of rainfall, but with minimal precipitation.

Today, the highest temperature will be 57.2°F, while the lowest temperature will be 50°F.
The highest temperature will be slightly warmer than the average maximum of 48.6°F in November. The lowest temperature will be noticeably higher than the average low of 39°F.

On Monday, in Mercer Island, sunrise will be at 7:05 am and sunset at 4:39 pm (PST).

Today, the daylight will last for 9h and 35min.