| NWS Forecast for: Newcastle Issued by: National Weather Service Rapid City, SD Last Update: 304 AM MDT Wed Jun 17 2026 |  |
Early This Morning: Breezy. Mostly clear with a 20 percent chance of showers. Lows in the upper 50s. Northwest winds 15 to 25 mph with gusts up to 40 mph. Today: Mostly sunny and windy. Highs in the mid 70s. Northwest winds 25 to 35 mph with gusts up to 45 mph. Tonight: Partly cloudy and breezy. Lows in the upper 40s. Northwest winds 20 to 30 mph with gusts up to 40 mph, diminishing to 10 to 15 mph after midnight. Thursday: Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 70s. Northwest winds 10 to 15 mph. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Northeast winds 5 to 10 mph. Gusts up to 20 mph in the evening. Juneteenth: Mostly sunny. Highs in the lower 80s. North winds around 5 mph, becoming south with gusts up to 20 mph in the afternoon. Friday Night: Partly cloudy. Lows in the mid 50s. Saturday: Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. Saturday Night: A chance of thunderstorms. Showers. Lows in the lower 50s. Chance of rain 90 percent. Sunday: Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 70 percent. Sunday Night: A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 40s. Chance of rain 40 percent. Monday: Becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent. Monday Night: Partly cloudy in the evening, then clearing. A chance of showers and thunderstorms. Lows in the upper 40s. Chance of rain 50 percent. Tuesday: Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. | |
| Zone Forecast: Newcastle | |
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