| NWS Forecast for: Newcastle WY Issued by: National Weather Service Rapid City, SD Last Update: 1:01 am MST Nov 8, 2025 |  |
Overnight: Mostly clear, with a low around 29. Wind chill values as low as 16. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 36 mph. Saturday: A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 38. Wind chill values as low as 17. Windy, with a northwest wind 22 to 30 mph, with gusts as high as 41 mph. New snow accumulation of less than a half inch possible. Saturday Night: Mostly cloudy, with a low around 23. Wind chill values as low as 12. Northwest wind 14 to 18 mph, with gusts as high as 26 mph. Sunday: Mostly sunny, with a high near 41. Wind chill values as low as 12. Northwest wind 3 to 8 mph. Winds could gust as high as 16 mph. Sunday Night: Partly cloudy, with a low around 24. Calm wind becoming southeast around 5 mph. Monday: Mostly sunny, with a high near 58. Calm wind becoming west around 6 mph in the afternoon. Monday Night: Partly cloudy, with a low around 38. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Veterans Day: Sunny, with a high near 57. Northwest wind 10 to 17 mph, with gusts as high as 26 mph. Tuesday Night: Mostly clear, with a low around 31. Wednesday: Sunny, with a high near 54. Wednesday Night: Partly cloudy, with a low around 34. Thursday: Mostly sunny, with a high near 60. Thursday Night: Mostly clear, with a low around 38. Friday: Mostly sunny, with a high near 63. | |
| Newcastle WY 43.86°N 104.21°W (Elev. 4380 ft) | |
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