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
 46.2N 122.18W (Elev. 1828 m)
Last Update: 2:24 pm PDT May 15, 2021
Tabular Forecast
[hide menu]  |  Font Size: A A A   Get as XML
Weather ElementsWeather/PrecipitationFire Weather
Temperature (°C)
Dewpoint (°C)
Wind Chill (°C)

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  

Date05/1505/16
Hour (PDT)141516171819202122230001020304050607080910111213
Temperature (°C)161617171717161412111010986678101112131313
Dewpoint (°C)111110998876555431-10121-1-2-11
Wind Chill (°C)998643468
Surface Wind (mph)777888555777777777777555
Wind DirNWNWNWNWNWNWWSWWSWWSWNNWNNWNNWNWNWNWNWNWNWNNWNNWNNWWNWWNWWNW
Gust
Sky Cover (%)000000111111333101010101010777
Precipitation Potential (%)000000000000000000000000
Relative Humidity (%)717066615960616365686970717068666461564739373943
Rain------------------------------------------------
Thunder------------------------------------------------
Snow------------------------------------------------
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Date05/17
Hour (PDT)141516171819202122230001020304050607080910111213
Temperature (°C)1313121212111198776654333345689
Dewpoint (°C)33445665433321-3-3-11220-2-3-2
Wind Chill (°C)86433321-1-1-1-112357
Surface Wind (mph)888111111888101010999999999999
Wind DirWNWWNWWNWNWNWNWNWNWNWNWNWNWNWNWNWWNWWNWWNWWNWWNWWNWWWW
Gust
Sky Cover (%)444111333111181818444444323232202020
Precipitation Potential (%)000111111000000222222222
Relative Humidity (%)485256606469737575767778787661657586918369554847
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
English 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