| NWS Forecast for: Newcastle Issued by: National Weather Service Rapid City, SD Last Update: 1233 PM MDT Wed Sep 23 2026 | |
| This Afternoon: Mostly cloudy. Highs in the upper 70s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Tonight: Partly cloudy. Lows around 50. North winds 5 to 10 mph. Thursday: Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 70s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Thursday Night: Becoming partly cloudy. Lows in the lower 50s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the evening. Friday: Partly cloudy with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Friday Night: Mostly clear. Lows around 50. Saturday: Sunny. Highs in the mid 70s. Saturday Night: Clear. Lows in the lower 50s. Sunday: Partly cloudy. Highs in the mid 70s. Sunday Night: Partly cloudy. A chance of showers in the evening, then a slight chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. Monday: Becoming partly cloudy. A 50 percent chance of showers. Highs in the upper 60s. Monday Night: A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 50 percent. Tuesday: Partly cloudy. A chance of showers in the morning, then a slight chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. | |
| Zone Forecast: Newcastle | |
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