SXUS43 KBIS 232130 RECBIS NDZ001>005-009-010-012-013-017>020-022-023-025-031>033-035>037- 040>044-046>048-050-051-055>062-241200- Recreational Forecast National Weather Service Bismarck ND 430 PM CDT Sun Aug 23 2026 For Western Lake Sakakawea... .TONIGHT...South winds 10 to 20 mph. Slight chance of thunderstorms. Partly cloudy. Lows around 60. .MONDAY...Windy. West winds 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Slight chance of thunderstorms in the morning. Sunny. Highs in the mid 80s. For Eastern Lake Sakakawea... .TONIGHT...South winds 10 to 20 mph. Chance of thunderstorms through the night. Slight chance of thunderstorms after midnight. Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 50s. .MONDAY...South winds around 10 mph shifting to the west 10 to 20 mph in the late morning and afternoon. Slight chance of thunderstorms until late afternoon. Sunny. Highs in the mid 80s. For Northern Lake Oahe... .TONIGHT...Southeast winds 10 to 20 mph. Chance of thunderstorms. Mostly cloudy in the evening then clearing. Lows in the lower 60s. .MONDAY...Southwest winds around 10 mph shifting to the west late in the afternoon. Slight chance of thunderstorms. Mostly sunny. Highs in the upper 80s. $$