Weather in Allen, South Dakota
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 04:26 PM ET · Refreshes every hour
83°F
Clear sky
Feels like 79°F
18%
Humidity
10 mph
Wind Speed
About Weather in Allen
Allen is located in South Dakota (coordinates: 43.279136°N, 101.92651°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.