FPUS43 KBIS 272012 City Forecast for Bismarck, ND Issued Saturday afternoon - Aug 27, 2011 .Saturday night... Low 58, 20% chance of precipitation. .Sunday... Partly cloudy, high 86, 20% chance of precipitation. .Sunday night... Low 60, 10% chance of precipitation. .Monday... Sunny, high 81. .Monday night... Low 60.