Portsmouth, IA

Current conditions, hourly and 7-day forecast, and live radar for Portsmouth, IA 51565. Right now: mostly clear, 57°F. Data from the National Weather Service.

• Tonight: Mostly clear, with a low around 57. North wind around 2 mph.
• Thursday: Patchy fog between 7am and 9am. Sunny, with a high near 79. East southeast wind 0 to 3 mph.
• Thursday Night: Clear. Low around 59, with temperatures rising to around 61 overnight. South southeast wind 2 to 9 mph, with gusts as high as 17 mph.
• Friday: Mostly sunny, with a high near 82. South wind 10 to 16 mph, with gusts as high as 23 mph.
• Friday Night: A chance of rain showers between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. South southwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
• Saturday: A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 75. North northwest wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.