The 10-day span for Spearfish runs from a high near 35° on Sunday down to 15° overnight on Tuesday. About 0.30 in of precipitation is expected in total; the most likely wet day is Sunday (57% chance). Wind is the one to watch: gusts to 37 mph around Monday. No active NWS alerts at the moment — quiet on the hazards front. Right now Spearfish is running about 73° warmer than Dickinson. Longer view: four full seasons with serious winter and real summer heat.
Spearfish, SD · Elev 3,648 ft · 44.49°N, 103.86°W · South Dakota · Forecast computed for these exact coordinates