North wind 10 to 14 mph. See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! NOAA National Weather Service National Weather Service. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Portsmouth, RI, US with The Weather Network. Get the Portsmouth, RI local hourly forecast including temperature, RealFeel, and chance of precipitation. Know what's coming with AccuWeather's extended daily forecasts for Portsmouth, RI. January 21, 2021: Portsmouth weather forecast for now and the week ahead — Clear for the hour. Share: Get the Long Range Weather for Your Location. Mostly cloudy throughout the day. Want to know what the weather is now? Weather reports for over 50,000 U.S. locations includes current conditions, three-day forecasts, seven-day forecasts, hourly forecast tracking, weather history, weather radar and warnings. Get the latest 7 Day weather for Portsmouth, RI, US including weather news, video, warnings and interactive maps from the weather experts. 2021 Long Range Weather Forecast for Portsmouth, RI . Reset Map, or Add PWS. Everything you need to be ready to step out prepared. Up to 90 days of daily highs, lows, and precipitation chances. Location: Portsmouth, RI. Chance of precipitation is 40%. A chance of snow. Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Partly sunny, with a high near 34. Check out our current live radar and weather forecasts for Portsmouth, Rhode Island to help plan your day No precipitation throughout the week. Nearby Weather Stations. No PWS. Portsmouth, RI Weather History star_ratehome. Portsmouth, RI weekend weather forecast, high temperature, low temperature, precipitation, weather map from The Weather Channel and Weather.com