Cedar Rapids Weather Forecasts. Extended Forecast for Cedar Rapids IA Today. Note: Long range forecasts are regional, not city-specific. Up to 90 days of daily highs, lows, and precipitation chances. Cedar Rapids, IA - Weather forecast from Theweather.com. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! Forecasts: 15-Day Forecast My Location: Cedar Rapids - Cedar Rapids Municipal Airport, IA Current Time: 01:52:53 PM CST 732 ft) Mobile Weather Information | En Español Last Update: 5:15 pm CST Nov 29, 2020 Forecast Valid: 9pm CST Nov 29, 2020-6pm CST Dec 6, 2020 Oct November 2020 . 17 to 27 °F-1 to 9 °C-11 to -1 °C. A Risky Day is not a direct prediction of precipitation (Rain/Snow) but instead a forecast of ideal conditions for a storm to enter the region.