Cape Cod weekend forecast: Sunny, cooler, windy Hi folks--hope you're enjoying the warm weather, because a change is due this weekend. By Sunday night we might be down to 20 degrees! Please stop booing and take a look at the latest forecast from the National Weather Service, including the in-depth area forecast discussion: NWS Forecast for: Hyannis MA Issued by: National Weather Service Norton, MA Last Update: 9:59 am EST Mar 11, 2021 Today: Mostly sunny, with a high near 57. Southwest wind 16 to 18 mph, with gusts as high as 28 mph. Tonight: A slight chance of showers after 4am. Increasing clouds, with a low around 46. Southwest wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.