Skip Navigation Linksweather.gov 
NOAA logo - Click to go to the NOAA homepageNational Weather Service Forecast Office NWS logo - Click to go to the NWS homepage
Portland, OR
 
 
 Point Forecast: Mount St Helens WA
 46.18N 122.18W (Elev. 6204 ft)
Last Update: 8:27 am PDT Apr 17, 2021
Tabular Forecast
[hide menu]  |  Font Size: A A A   Get as XML
Weather ElementsWeather/PrecipitationFire Weather
Temperature (°F)
Dewpoint (°F)
Wind Chill (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Snow
Freezing Rain
Sleet
Fog
Mixing Height  
Haines Index
Lightning Activity Level
Trans. Wind  

48-Hour Period Starting:       Back 2 Days  

Date04/1704/18
Hour (PDT)080910111213141516171819202122230001020304050607
Temperature (°F)424648505253545454535350474542424242414139383941
Dewpoint (°F)202424252829303030313130272522212121201918161820
Wind Chill (°F)3742444748454339393939383836333436
Surface Wind (mph)888888777555555555555777
Wind DirEEEEEEEEESESESENNNENEENEENENNNNNENNENNE
Gust
Sky Cover (%)000000000000111000000222
Precipitation Potential (%)000000000000000000000111
Relative Humidity (%)414138384040404040424345464645434343434142414342
Rain------------------------------------------------
Thunder------------------------------------------------
Snow------------------------------------------------
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Date04/19
Hour (PDT)080910111213141516171819202122230001020304050607
Temperature (°F)424649515353545354524846434241403939383635343435
Dewpoint (°F)222426283232323131323030282624222020191819192020
Wind Chill (°F)3842464240373635353434312927272728
Surface Wind (mph)777999101010141414101010777101010999
Wind DirNNWNNWNNWNWNWNWNWNWNWNWNWNWNWNWNWNNWNNWNNWNENENEEEE
Gust202020
Sky Cover (%)666888666666555333111777
Precipitation Potential (%)111111111000000000000111
Relative Humidity (%)444241404444434242465053545351494746464851545555
Rain------------------------------------------------
Thunder------------------------------------------------
Snow------------------------------------------------
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Radar and Satellite (Click for larger image)
Link to Local Radar Data Link to Satellite Data
Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
PFM (Forecast Matrix)PFM Decoding Guide
Rainfall ForecastsCurrent River Levels
Weather PlannerMapped Observations
Road ConditionsAvalanche Outlooks
Marine WeatherFire Weather
User Defined Area

Webmaster
NOAA's National Weather Service
Portland, OR
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities