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Saint Helens, Washington Weather Forecast
Saint Helens, Washington Weather
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Weather Forecast for Saint Helens, Washington : Cowlitz County
Issued: 6:41 pm PST Dec 15, 2025 Latitude: 46.3442747 Longitude: -122.5287198 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
80% chance of rain on Tonight 100% chance of rain on Tuesday 100% chance of rain & snow on Wednesday 100% chance of rain on Thursday Rain and Snow on Friday Rain and Snow on Saturday 70% chance of rain & snow on Sunday 70% chance of rain on Monday
Low: 45°F High: 52°F High: 43°F High: 48°F High: 42°F High: 41°F High: 44°F High: 44°F
Low: 38°F Low: 39°F Low: 38°F Low: 36°F Low: 36°F Low: 36°F  
Rain Rain Rain & Snow Rain Rain and Snow Rain and Snow Rain & Snow Rain
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Current Conditions at
KELSO - (KKLS)
54°
Mostly Clear
as of 5:56 PM PST
Rel. Humidity: 76%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 4900ft
Current Conditions at
CHEHALIS-CENTRALIA - (KCLS)
52°
Cloudy
as of 6:35 PM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 8 Miles
Pressure: 30.04 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Scattered at 2200ft, Broken at 2700ft, Solid Overcast at 4700ft
Current Conditions at
SCAPPOOSE - (KSPB)
54°
Cloudy
Light Rain
as of 5:53 PM PST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 3900ft, Broken at 4500ft, Solid Overcast at 6000ft
Current Conditions at
OLYMPIA - (KOLM)
50°
Mostly Cloudy
as of 6:44 PM PST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
8 MPH
Gust: 23 MPH
210° Southwest
Cloud Level(s): Few at 2100ft, Broken at 2700ft, Broken at 4900ft
80% chance of rain Tonight Tonight... Rain. Low around 45. Southwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

100% chance of rain Tuesday Tuesday... Rain. High near 52. South wind 5 to 7 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.

100% chance of thunderstorms Tuesday Night Tuesday Night... Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then rain after 1am. Low around 38. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

100% chance of rain & snow Wednesday Wednesday... Rain. Snow level 2500 feet. High near 43. Southwest wind around 8 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of rain Wednesday Night Wednesday Night... Rain. Low around 39. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

100% chance of rain Thursday Thursday... Rain. High near 48. Chance of precipitation is 100%.

100% chance of rain Thursday Night Thursday Night... Rain. Low around 38. Chance of precipitation is 100%.

Rain and Snow on Friday Friday... Rain. Snow level 2500 feet. Cloudy, with a high near 42.

70% chance of rain & snow Friday Night Friday Night... Rain likely. Snow level 2100 feet. Mostly cloudy, with a low around 36.

Rain and Snow on Saturday Saturday... Rain. Snow level 2300 feet. Cloudy, with a high near 41.

70% chance of rain & snow Saturday Night Saturday Night... Rain likely. Snow level 2400 feet. Mostly cloudy, with a low around 36.

70% chance of rain & snow Sunday Sunday... Rain likely. Snow level 2400 feet rising to 3000 feet in the afternoon. Mostly cloudy, with a high near 44.

70% chance of rain Sunday Night Sunday Night... Rain likely. Mostly cloudy, with a low around 36.

70% chance of rain Monday Monday... Rain likely. Mostly cloudy, with a high near 44.

Current Radar Image


Sun Almanac for Saint Helens, Washington
Sunrise: 07:47 AM
Sunset: 4:24 PM
Civil Sunrise:07:12 AM
Civil Sunset: 4:59 PM
Nautical Sunrise: 06:34 AM
Nautical Sunset: 5:37 PM
Astro Sunrise: 05:57 AM
Astro Sunset: 6:14 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.