Point Forecast: Mount St Helens WA
 46.18N 122.18W (Elev. 6204 ft)
Last Update: 6:41 pm PDT Jul 14, 2025
Tabular Forecast
[hide menu]Get as XML
Weather ElementsWeather/PrecipitationFire Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Mixing Height  
Trans. Wind  

48-Hour Period Starting:       Back 2 Days  

Date07/1407/15
Hour (PDT)192021222300010203040506070809101112131415161718
Temperature (°F)575452505050505050494949525455585961626364656565
Dewpoint (°F)413634353435353535343534353637394144444545414141
Heat Index (°F)
Surface Wind (mph)161514131010101010101010876655556677
Wind DirWNWNWNWNNWNNNNNNNNNNENNENEENEENEEENEENEENEENEENEENE
Gust222018
Sky Cover (%)11191614171719138681271122714131891212
Precipitation Potential (%)011001100000000000000000
Relative Humidity (%)565151565557565656565855525150495154525150424242
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/16
Hour (PDT)192021222300010203040506070809101112131415161718
Temperature (°F)646360595756565555545456586062636566676868686867
Dewpoint (°F)404037363433333231303031333435373940414242434342
Heat Index (°F)
Surface Wind (mph)788810101014141414141410101066655588
Wind DirENENNENNENNENENENEEEEEEEESEESEESESSSWWWWW
Gust181818
Sky Cover (%)1215151566622233322233366633
Precipitation Potential (%)000000000000000000000000
Relative Humidity (%)424242424242414140403938383737383838393939404040
Rain------------------------------------------------
Thunder------------------------------------------------

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
PFM (Forecast Matrix)Current River Levels
Weather PlannerMapped Observations
Road ConditionsMarine Weather
Fire WeatherUser Defined Area Forecast