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Alpha, Washington Weather Forecast
Alpha, Washington Weather
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Weather Forecast for Alpha, Washington : Lewis County
Issued: 7:00 am PST Dec 18, 2025 Latitude: 46.6114946 Longitude: -122.6053934 View on Google Maps

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Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
100% chance of rain on Today 80% chance of rain on Tonight 100% chance of rain & snow on Friday 100% chance of rain on Saturday 90% chance of rain on Sunday Rain on Monday 70% chance of rain on Tuesday 20% chance of rain on Wednesday
High: 50°F Low: 34°F High: 39°F High: 41°F High: 42°F High: 41°F High: 43°F High: 41°F
Low: 35°F Low: 36°F Low: 37°F Low: 35°F Low: 31°F  
Rain Rain Rain & Snow Rain Rain Rain Rain Rain
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Current Conditions at
CHEHALIS-CENTRALIA - (KCLS)
41°
Feels like 34°F
Cloudy
Mist
as of 7:15 AM PST
Rel. Humidity: 100%
Dew Point: 41°F
Visibility: 6 Miles
Pressure: 29.78 in.
Flight Rule: MVFR
Wind Data
12 MPH
Gust: 18 MPH
190° South
Cloud Level(s): Broken at 2700ft, Solid Overcast at 3100ft
Current Conditions at
OLYMPIA - (KOLM)
41°
Feels like 34°F
Cloudy
Light Rain
as of 6:54 AM PST
Rel. Humidity: 86%
Dew Point: 37°F
Visibility: 9 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
12 MPH
190° South
Cloud Level(s): Few at 2700ft, Solid Overcast at 3200ft
Current Conditions at
FORT LEWIS - (KGRF)
41°
Cloudy
Light Rain
as of 6:55 AM PST
Rel. Humidity: 93%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
6 MPH
120° Southeast
Cloud Level(s): Solid Overcast at 4700ft
Current Conditions at
KELSO - (KKLS)
39°
Feels like 32°F
Cloudy
Light Rain
as of 7:15 AM PST
Rel. Humidity: 93%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
10 MPH
130° Southeast
Cloud Level(s): Few at 2000ft, Scattered at 2600ft, Solid Overcast at 3500ft
100% chance of rain Today Today... Rain. High near 50. South southwest wind 10 to 15 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

80% chance of rain Tonight Tonight... Rain, mainly before 11pm. Low around 34. West wind 6 to 11 mph becoming light west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

100% chance of rain & snow Friday Friday... Rain, possibly mixed with snow, becoming all rain after 1pm. Some thunder is also possible. High near 39. South southwest wind 3 to 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

100% chance of thunderstorms Friday Night Friday Night... Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 35. South southwest wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

100% chance of rain Saturday Saturday... Rain. High near 41. South wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

80% chance of rain Saturday Night Saturday Night... Rain. Low around 36. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

90% chance of rain Sunday Sunday... Rain. High near 42. Chance of precipitation is 90%.

Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 37.

Rain on Monday Monday... Rain. Cloudy, with a high near 41.

Rain on Monday Night Monday Night... Rain. Cloudy, with a low around 35.

70% chance of rain Tuesday Tuesday... Rain likely. Mostly cloudy, with a high near 43.

20% chance of rain Tuesday Night Tuesday Night... A chance of rain. Mostly cloudy, with a low around 31.

20% chance of rain Wednesday Wednesday... A chance of rain. Mostly cloudy, with a high near 41.

Current Radar Image


Sun Almanac for Alpha, Washington
Sunrise: 07:50 AM
Sunset: 4:24 PM
Civil Sunrise:07:15 AM
Civil Sunset: 4:59 PM
Nautical Sunrise: 06:37 AM
Nautical Sunset: 5:38 PM
Astro Sunrise: 06:00 AM
Astro Sunset: 6:15 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.