SXUS43 KBIS 182130 RECBIS NDZ001>005-009-010-012-013-017>020-022-023-025-031>033-035>037- 040>044-046>048-050-051-055>062-191200- Recreational Forecast National Weather Service Bismarck ND 430 PM CDT Mon May 18 2026 For Western Lake Sakakawea... .TONIGHT...North winds 10 to 20 mph. Slight chance of showers through the night. Mostly cloudy. Lows in the lower 30s. .TUESDAY...West winds around 10 mph. Partly sunny in the morning then clearing. Highs in the upper 50s. For Eastern Lake Sakakawea... .TONIGHT...North winds 10 to 20 mph. Slight chance of showers through the night. Cloudy. Lows in the lower 30s. .TUESDAY...Northwest winds 10 to 15 mph. Mostly cloudy in the morning then becoming mostly sunny. Highs in the mid 50s. For Northern Lake Oahe... .TONIGHT...Northwest winds 10 to 20 mph. Chance of showers. Mostly cloudy. Lows in the mid 30s. .TUESDAY...Northwest winds 10 to 15 mph. Partly sunny. Highs in the mid 50s. $$