Weather in Lake Madison, South Dakota
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 06:33 PM ET · Refreshes every hour
84°F
Partly cloudy
Feels like 76°F
27%
Humidity
17 mph
Wind Speed
About Weather in Lake Madison
Lake Madison is located in South Dakota (coordinates: 43.955116°N, 97.026614°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.