Newcastle, WY 7-Day Weather Forecast
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Newcastle Weather Forecast


Newcastle, WY Weather Forecast Date: 422 AM MST Sun Nov 01 2026
Weather forecast for Newcastle, WY
| Today Hi: 61°FHi: 16°C Lo: 41°F Lo: 5°C |
Today... Mostly cloudy. Patchy fog. A chance of rain this afternoon. Highs in the lower 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 30 mph this afternoon. Chance of rain 40%. |
| Mon Hi: 45°FHi: 7°C Lo: 31°F Lo: -1°C |
Monday... Rain, windy with highs in the mid 40s. Northwest winds 25 to 40 mph with gusts up to 50 mph. Chance of rain 90%. |
| Tue Hi: 51°FHi: 11°C Lo: 30°F Lo: -1°C |
Tuesday... Sunny. Highs in the lower 50s. Northwest winds 10 to 20 mph with gusts up to 30 mph. |
| Wed Hi: 55°FHi: 13°C Lo: 31°F Lo: -1°C |
Wednesday... Partly cloudy. Highs in the mid 50s. |
| Thu Hi: 55°FHi: 13°C Lo: 31°F Lo: -1°C |
Thursday... Partly cloudy in the morning, then clearing. Highs in the mid 50s. |
| Fri Hi: 51°FHi: 11°C Lo: 31°F Lo: -1°C |
Friday... Mostly sunny. Highs in the lower 50s. |
| Sat Hi: 49°FHi: 9°C |
Saturday... Partly cloudy with a slight chance of rain and snow in the morning, then mostly sunny in the afternoon. Breezy with highs in the upper 40s. Chance of precipitation 20%. |
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