Portsmouth Wind ForecastUnited StatesORMultnomah CountyPortsmouth1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Portsmouth wind forecast issued today at 3:30 am. Next forecast at approx. 3:30 pm.Portsmouth Wind Statistics May WindPearson Airfield (3.7 miles)2025AprilMayStrongest – Average May–Strongest 8 April, 202531.1mph SAverage April4.6mphStrongest 24 February, 202545mph WSWAverage 20254.3mphClimate (2010–Present)Pearson Airfield (3.7 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 10 March, 202448.1mph SSWAverage 2020–20255.6mphGet WillyWeather+ to remove ads