Weather WorldBismark Lake, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Bismark Lake, SD Weather Forecast
Bismark Lake, SD Weather Forecast Date: 847 AM MDT Wed Oct 28 2026
The area/counties/county of: Central Black Hills, including the cities of: Hill City, Mt Rushmore, Johnson Siding, Keystone, Rockerville, Hisega, Pactola Reservoir, Custer, Jewel Cave, and Custer State Park.or toggle through each period.
Rest of Today... Partly cloudy this morning, then clearing. A slight chance of rain showers this morning. Highs in the mid 50s. West winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20%.
Tonight... Clear. Lows in the mid 30s. South winds 5 to 10 mph.
Thursday... Mostly sunny. Highs in the upper 50s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.
Thursday Night... Partly cloudy. Lows in the upper 30s. North winds 5 to 10 mph.
Friday... Partly cloudy. Highs in the lower 50s. East winds 5 to 10 mph with gusts up to 25 mph.
Friday Night... Mostly cloudy with a 20% chance of rain. Lows in the lower 40s.
Saturday... Partly cloudy. Highs in the upper 50s.
Saturday Night... Partly cloudy. Lows in the lower 40s.
Sunday... Partly cloudy. A slight chance of rain in the afternoon. Highs in the upper 50s. Chance of rain 20%.
Sunday Night... Rain. Lows in the upper 30s. Chance of rain 80%.
Monday... Mostly cloudy. Rain likely in the morning, then a chance of rain in the afternoon. Highs in the mid 40s. Chance of rain 70%.
Monday Night... Partly cloudy with a chance of rain and snow. Lows in the mid 30s. Chance of precipitation 50%.
POP = Probability of Precipitation
Bismark Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...