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. 5997 ft)
Last Update: 5:40 pm PDT Apr 18, 2024
Tabular Forecast
[hide menu]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  

Date04/1804/19
Hour (PDT)181920212223000102030405060708091011121314151617
Temperature (°F)403936343332313029272727272829313234353636373737
Dewpoint (°F)23242017141312111199999991012141515151516
Wind Chill (°F)333229262322191717131313131415171921222425262726
Surface Wind (mph)101010131413151516161617171723232325252522222220
Wind DirEEESEESEEEEEEEEEEEEEEESEESEESEESEESEESEESE
Gust20212122232224242432323234343430303028
Sky Cover (%)282410610275255578752213333
Precipitation Potential (%)000000000000000000000000
Relative Humidity (%)515452494645444546474746464443404039424241414142
Rain------------------------------------------------
Thunder------------------------------------------------
Snow------------------------------------------------
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

Date04/20
Hour (PDT)181920212223000102030405060708091011121314151617
Temperature (°F)373635323232323131313030313334363941414141383532
Dewpoint (°F)181716121110109998891010131517202224262727
Wind Chill (°F)262524202020201920191918202222252830303029252117
Surface Wind (mph)202020202016161615151516161622222226262634343432
Wind DirESEESEESEESEESEEEEEEEEEEESEESEESESESESESSWSSWSSWSW
Gust282826262623232321212123232331313136
Sky Cover (%)3122222299927272738383866666666666696
Precipitation Potential (%)0000000000011111149494949494993
Relative Humidity (%)454645434139393939393939383837373838424751627283
Rain------------------------------------------------
Thunder------------------------------------------------
Snow----------------------------------ChcChcChcChcChcChcOcnl
Freezing Rain------------------------------------------------
Sleet------------------------------------------------

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