SXUS43 KBIS 202130 RECBIS NDZ001>005-009-010-012-013-017>020-022-023-025-031>033-035>037- 040>044-046>048-050-051-055>062-211200- Recreational Forecast National Weather Service Bismarck ND 430 PM CDT Sun Sep 20 2026 For Western Lake Sakakawea... .TONIGHT...Southeast winds 10 to 15 mph. Mostly cloudy. Lows in the mid 40s. .MONDAY...Southeast winds 10 to 20 mph. Mostly sunny. Highs in the upper 60s. For Eastern Lake Sakakawea... .TONIGHT...East winds around 10 mph until early morning becoming light. Mostly cloudy. Lows in the mid 40s. .MONDAY...Southeast winds 10 to 15 mph. Mostly sunny. Highs in the upper 60s. For Northern Lake Oahe... .TONIGHT...East winds around 10 mph. Chance of showers through the night. Cloudy. Lows around 50. .MONDAY...Southeast winds around 10 mph. Mostly sunny. Highs in the mid 60s. $$