Weather in Grafton, SD · National Weather Service + NOAA
Weather in Grafton
Grafton has cold, snowy winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 6°, and about 36 inches of snow falls in a normal winter.
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 Grafton itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Howard, SD (10 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.