| NWS Forecast for: Newcastle Issued by: National Weather Service Rapid City, SD Last Update: 1137 AM MDT Thu Sep 24 2026 |  |
| This Afternoon: Partly cloudy. Highs in the mid 70s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Tonight: Partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the evening. Friday: Partly cloudy. A slight chance of showers in the afternoon. Highs in the mid 70s. Southeast winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent. Friday Night: Partly cloudy in the evening, then clearing. Lows in the lower 50s. Southeast winds 15 to 20 mph with gusts up to 30 mph, diminishing to 5 to 10 mph with gusts up to 20 mph after midnight. Saturday: Sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph with gusts up to 25 mph. Saturday Night: Mostly clear. Lows in the lower 50s. Sunday: Partly cloudy. Highs in the upper 70s. Sunday Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the mid 50s. Chance of rain 40 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. Showers likely. Lows in the upper 40s. Chance of rain 70 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 40 percent. Tuesday Night: Mostly clear. Lows in the lower 40s. Wednesday: Partly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. | |
| Zone Forecast: Newcastle | |
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