| NWS Forecast for: Newcastle WY Issued by: National Weather Service Rapid City, SD Last Update: 12:09 pm MDT Jul 13, 2025 |  |
| This Afternoon: Sunny, with a high near 88. Northwest wind around 5 mph. Tonight: Mostly clear, with a low around 64. North wind 5 to 10 mph becoming east in the evening. Winds could gust as high as 20 mph. Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. East wind 5 to 10 mph becoming south in the morning. Winds could gust as high as 15 mph. Monday Night: A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 60. East wind 5 to 10 mph, with gusts as high as 15 mph. Tuesday: A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 78. North wind around 10 mph, with gusts as high as 20 mph. Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Wednesday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 66. Northeast wind 5 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Wednesday Night: A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Thursday: Mostly sunny, with a high near 76. Thursday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59. Friday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59. Saturday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. | |
| Newcastle WY 43.86°N 104.21°W (Elev. 4380 ft) | |
Visit your local NWS office at: https://www.weather.gov/unr |
