Point Forecast: Mount St Helens WA
 46.18N 122.18W (Elev. 1891 m)
Last Update: 10:41 am PST Dec 11, 2024
Tabular Forecast
[show menu]Get as XML

Date12/1112/12
Hour (PST)101112131415161718192021222300010203040506070809
Temperature (°C)-10111-1-2-2-2-2-3-3-3-3-3-3-3-3-3-3-3-3-3-3
Dewpoint (°C)-13-12-9-9-9-9-9-9-10-10-9-9-8-8-8-8-8-8-7-8-8-8-8-7
Wind Chill (°C)-6-5-4-4-4-5-6-7-8-9-11-11-10-10-11-11-11-11-10-11-11-10-10-9
Surface Wind (mph)1111111110981014161820212121212120181818161616
Wind DirSSWSSSSWSSWSSSSSSSSESSESSESSESSESESSESSESSESSESSESSESSE
Gust
Sky Cover (%)736949393717395567778083858787899188929292929292
Precipitation Potential (%)6656611111722303951565654616262888888888888
Relative Humidity (%)394147485151565756576262636871697068727173717172
Rain------------------------------------------------
Thunder------------------------------------------------
Snow--------------SChcSChcChcChcChcLklyLklyChcLklyLklyLklyOcnlOcnlOcnlOcnlOcnlOcnl
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Date12/13
Hour (PST)101112131415161718192021222300010203040506070809
Temperature (°C)-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-2-2-2-2-3
Dewpoint (°C)-7-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-7-7-7-6-7-7
Wind Chill (°C)-8-8-8-7-8-8-8-8-8-8-8-7-7-8-8-8-8-8-8-8-8-8-8-9
Surface Wind (mph)111111888777888999101010111111141414
Wind DirSSSSWSWSWSWSWSWWSWWSWWSWWSWWSWWSWSWSWSWSWSWSWSSS
Gust
Sky Cover (%)949494949494888888888888777777818181858585828282
Precipitation Potential (%)919191919191818181818181656565656565737373737373
Relative Humidity (%)747780828383828282817977757677787877767472717274
Rain------------------------------------------------
Thunder------------------------------------------------
SnowOcnlOcnlOcnlOcnlOcnlOcnlOcnlOcnlOcnlOcnlOcnlOcnlLklyLklyLklyLklyLklyLklyLklyLklyLklyLklyLklyLkly
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Additional Forecasts and Information
English UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
PFM (Forecast Matrix)PFM Decoding Guide
Current River LevelsWeather Planner
Mapped ObservationsRoad Conditions
Marine WeatherFire Weather
User Defined Area Forecast