Allen has milder winters than most of South Dakota
Allen has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 86°, a January night drops to 14°, and about 48 inches of snow falls in a normal winter.
Getting the latest forecast from the National Weather Service…
What stands out about Allen’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Allen’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Allen.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Allen itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Martin, SD (12 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.