Weather WorldGrass Lake, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Grass Lake, SD Weather Forecast
Grass Lake, SD Weather Forecast Date: 721 PM CST Tue Nov 03 2026
The area/counties/county of: Codington, including the city of Watertown.or toggle through each period.
Tonight... Rain. Patchy fog. Breezy. Near steady temperature in the lower 40s. North winds 15 to 25 mph. Gusts up to 40 mph this evening. Chance of rain near 100%.
Wednesday... Rain. Patchy fog. Near steady temperature in the lower 40s. Northwest winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 90%.
Wednesday Night... Mostly cloudy. A chance of rain in the evening. Patchy fog. Lows in the lower 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50%.
Thursday... Patchy fog in the morning. Partly sunny. Highs in the lower 40s. North winds 10 to 15 mph with gusts up to 30 mph.
Thursday Night... Mostly cloudy. Lows in the upper 20s. Northeast winds 5 to 10 mph.
Friday... Partly sunny. Highs in the lower 40s.
Friday Night... Partly cloudy. Lows around 30. Highs in the lower 50s.
Saturday... Partly cloudy. Lows around 30. Highs in the lower 50s.
Saturday Night... Mostly clear. Lows in the mid 30s. Highs in the mid 50s.
Sunday... Mostly clear. Lows in the mid 30s. Highs in the mid 50s.
Sunday Night... Partly cloudy. Lows in the upper 30s. Highs in the upper 50s.
Monday... Partly cloudy. Lows in the upper 30s. Highs in the upper 50s.
Monday Night... Mostly clear. Lows in the mid 30s.
POP = Probability of Precipitation
Grass Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...