055 AWUS83 KBIS 310429 RWSBIS NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-311230- Regional Weather Forecast National Weather Service Bismarck ND 1029 PM CST Tue Dec 30 2025 /929 PM MST Tue Dec 30 2025/ Light snow and freezing drizzle are likely across northern and eastern parts of the region tonight through Wednesday morning. Temperatures will begin cooling from northeast to southwest tonight through Wednesday, with daytime temperatures ranging from the single digits below zero in the northern Red River Valley to the 30s from southeast Montana into western South Dakota. A large contrast in temperatures from cold northeast to mild southwest is forecast to remain in place to start the new year. $$