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Semiahmoo, Washington Weather Forecast
Semiahmoo, Washington Weather
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Weather Forecast for Semiahmoo, Washington : Whatcom County
Issued: 7:01 pm PST Dec 16, 2025 Latitude: 48.9890003 Longitude: -122.7732323 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
90% chance of rain on Tonight 70% chance of rain on Wednesday 100% chance of rain on Thursday 80% chance of thunderstorms on Friday Rain on Saturday 70% chance of rain on Sunday Rain on Monday 70% chance of rain & snow on Tuesday
Low: 43°F High: 49°F High: 49°F High: 45°F High: 45°F High: 45°F High: 46°F High: 45°F
Low: 41°F Low: 38°F Low: 39°F Low: 37°F Low: 39°F Low: 38°F  
Rain Rain Rain Thunderstorms Rain Rain Rain Rain & Snow
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Current Conditions at
BELLINGHAM - (KBLI)
50°
Cloudy
Rain Mist
as of 10:01 PM PST
Rel. Humidity: 93%
Dew Point: 48°F
Visibility: 1 3/4 Miles
Pressure: 29.36 in.
Flight Rule: IFR
Wind Data
5 MPH
Gust: 18 MPH
Cloud Level(s): Broken at 1100ft, Solid Overcast at 4300ft
Current Conditions at
ORCAS ISLAND ARPT - (KORS)
50°
Mostly Cloudy
Rain Mist
as of 9:55 PM PST
Rel. Humidity: 100%
Dew Point: 50°F
Visibility: 3 Miles
Pressure: 29.35 in.
Flight Rule: MVFR
Wind Data
5 MPH
Gust: 13 MPH
Cloud Level(s): Few at 700ft, Scattered at 3200ft, Broken at 3700ft
Current Conditions at
FRIDAY HARBOR - (KFHR)
48°
Cloudy
Light Rain
as of 9:53 PM PST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 9 Miles
Pressure: 29.35 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 3300ft, Solid Overcast at 5000ft
Current Conditions at
SKAGIT RGNL ARPT - (KBVS)
52°
Cloudy
as of 9:55 PM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 7 Miles
Pressure: 29.37 in.
Flight Rule: MVFR
Wind Data
13 MPH
180° South
Cloud Level(s): Solid Overcast at 1400ft
90% chance of rain Tonight Tonight... Rain, mainly before 1am. Low around 43. West southwest wind 17 to 20 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

70% chance of rain Wednesday Wednesday... Rain likely, mainly after 3pm. Increasing clouds, with a high near 49. Southwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

100% chance of rain Wednesday Night Wednesday Night... Rain. Low around 41. South southeast wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

100% chance of rain Thursday Thursday... Rain. High near 49. East southeast wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

80% chance of rain Thursday Night Thursday Night... Rain, mainly before 10pm. Low around 38. West southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

80% chance of thunderstorms Friday Friday... Rain likely, then showers and possibly a thunderstorm after 10am. High near 45. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

90% chance of rain Friday Night Friday Night... Rain. Low around 39. Chance of precipitation is 90%.

Rain on Saturday Saturday... Rain. Mostly cloudy, with a high near 45.

70% chance of rain Saturday Night Saturday Night... Rain likely, mainly before 4am. Mostly cloudy, with a low around 37.

70% chance of rain Sunday Sunday... Rain likely, mainly after 10am. Mostly cloudy, with a high near 45.

Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 39.

Rain on Monday Monday... Rain. Mostly cloudy, with a high near 46.

70% chance of rain & snow Monday Night Monday Night... Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 38.

70% chance of rain & snow Tuesday Tuesday... Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 45.

Current Radar Image


Sun Almanac for Semiahmoo, Washington
Sunrise: 08:00 AM
Sunset: 4:15 PM
Civil Sunrise:07:23 AM
Civil Sunset: 4:52 PM
Nautical Sunrise: 06:42 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 6:11 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.