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Grotto, Washington Weather Forecast
Grotto, Washington Weather
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Weather Forecast for Grotto, Washington : King County
Issued: 1:25 am PST Dec 15, 2025 Latitude: 47.7362179 Longitude: -121.4234359 View on Google Maps

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Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
100% chance of rain on Overnight 100% chance of thunderstorms on Monday 100% chance of rain & snow on Tuesday 100% chance of rain & snow on Wednesday Rain and Snow on Thursday Snow on Friday Snow on Saturday Snow on Sunday
Low: 49°F High: 54 °F High: 47°F High: 38°F High: 41°F High: 38°F High: 37°F High: 39°F
Low: 38°F Low: 33°F Low: 34°F Low: 32°F Low: 31°F Low: 31°F  
Rain Thunderstorms Rain & Snow Rain & Snow Rain and Snow Snow Snow Snow
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Current Conditions at
STAMPEDE PASS - (KSMP)
39°
Cloudy
Light Rain Mist
as of 3:38 AM PST
Rel. Humidity: 100%
Dew Point: 39°F
Visibility: 1 Miles
Pressure: 29.92 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Scattered at 2200ft, Broken at 2800ft, Solid Overcast at 3600ft
Current Conditions at
RENTON - (KRNT)
52°
Cloudy
Light Rain
as of 2:53 AM PST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 7 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 3900ft
Current Conditions at
EVERETT - (KPAE)
48°
Feels like 43°F
Cloudy
Rain Mist
as of 3:41 AM PST
Rel. Humidity: 100%
Dew Point: 48°F
Visibility: 3 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
12 MPH
210° Southwest
Cloud Level(s): Scattered at 2500ft, Broken at 3100ft, Solid Overcast at 4000ft
Current Conditions at
BOEING FIELD - (KBFI)
52°
Cloudy
Light Rain Mist
as of 2:53 AM PST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 5 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
3 MPH
090° East
Cloud Level(s): Solid Overcast at 3900ft
100% chance of rain Overnight Overnight... Rain. The rain could be heavy at times. Steady temperature around 49. East wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

100% chance of thunderstorms Monday Monday... Rain before 1pm, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Temperature rising to near 54 by 11am, then falling to around 46 during the remainder of the day. Breezy, with a west wind 16 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

90% chance of thunderstorms Monday Night Monday Night... Rain and possibly a thunderstorm. Low around 38. Breezy, with a west wind 17 to 22 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

100% chance of rain & snow Tuesday Tuesday... Rain, possibly mixed with snow, becoming all rain after 10am. High near 47. South southwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

100% chance of rain & snow Tuesday Night Tuesday Night... Rain before 1am, then rain and snow. The rain and snow could be heavy at times. Low around 33. Breezy, with a west southwest wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

100% chance of rain & snow Wednesday Wednesday... Snow showers, possibly mixed with rain. The snow could be heavy at times. High near 38. Breezy. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

90% chance of rain & snow Wednesday Night Wednesday Night... Rain and snow showers. Low around 34. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Rain and Snow on Thursday Thursday... Rain, possibly mixed with snow. Cloudy, with a high near 41.

Rain and Snow on Thursday Night Thursday Night... Rain and snow. Cloudy, with a low around 32.

Snow on Friday Friday... Snow, possibly mixed with rain. Cloudy, with a high near 38.

Snow on Friday Night Friday Night... Snow, possibly mixed with rain. Cloudy, with a low around 31.

Snow on Saturday Saturday... Snow, possibly mixed with rain. Cloudy, with a high near 37.

Snow on Saturday Night Saturday Night... Snow, possibly mixed with rain. Cloudy, with a low around 31.

Snow on Sunday Sunday... Snow, possibly mixed with rain. Mostly cloudy, with a high near 39.

Current Radar Image


Sun Almanac for Grotto, Washington
Sunrise: 07:48 AM
Sunset: 4:14 PM
Civil Sunrise:07:12 AM
Civil Sunset: 4:50 PM
Nautical Sunrise: 06:33 AM
Nautical Sunset: 5:30 PM
Astro Sunrise: 05:55 AM
Astro Sunset: 6:07 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.