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Newcastle, WY Weather Forecast

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Newcastle, WY Weather Forecast

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Newcastle WY weather - Clear - 53°F
Clear
53°F
Updated 4:55 am
Feels Like 53°F
Humidity 57%
Wind N 0 mph
Barometer  29.81 in
Dew Point 39°F
Newcastle WY weather - Clear - 12°C
Clear
12°C
Updated 4:55 am
Feels Like 11°C
Humidity 57%
Wind N 0 km/h
Barometer  100.9 kPa
Dew Point 4°C
WX Settings

Newcastle Weather Forecast

EARLY THIS MORNING TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Newcastle, WY Weather - Early This Morning Partly Cloudy Newcastle, WY Weather - Today Clearing Newcastle, WY Weather - Tonight Chance Of Showers Newcastle, WY Weather - Saturday Mostly Sunny Newcastle, WY Weather - Saturday Night Partly Cloudy Newcastle, WY Weather - Sunday Rain And Snow Newcastle, WY Weather - Sunday Night Chance Of Snow Newcastle, WY Weather - Monday Chance Of Snow Newcastle, WY Weather - Monday Night Chance Of Rain Newcastle, WY Weather - Tuesday Clearing Newcastle, WY Weather - Tuesday Night Chance Of Rain Newcastle, WY Weather - Wednesday Clearing
Partly Cloudy Clearing Chance of Showers Mostly Sunny Partly Cloudy Rain and Snow Chance of Snow Chance of Snow Chance of Rain Clearing Chance of Rain Clearing
Lo: 51°FLo: 11°C Hi: 75°FHi: 24°C
 Lo: 31°FLo: -1°C Hi: 49°FHi: 9°C
 Lo: 31°FLo: -1°C Hi: 45°FHi: 7°C
 Lo: 31°FLo: -1°C Hi: 45°FHi: 7°C
 Lo: 29°FLo: -2°C Hi: 55°FHi: 13°C
 Lo: 31°FLo: -1°C Hi: 51°FHi: 11°C
POP: 20% POP: 40% POP: 50% POP: 50% POP: 20% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 317 AM MDT Fri Oct 23 2026 Newcastle, WY Weather - WeatherWorld.com

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Issued: 938 PM MDT Thu Oct 22 2026

Key Messages

  • Unseasonably warm temperatures through Friday (10-20F above average).
  • Critical fire wx expected over portions of northeastern WY Friday afternoon and evening
  • Gusty northwest winds (gusts of up to 55 mph over the western SD plains) expected late Friday into early Saturday morning
  • Much cooler this weekend with chances for light rain and possibly some snow Sunday.

Discussion

...(This Evening Through Thursday) Issued at 1223 PM MDT Thu Oct 22 2026

Current upper air analysis depicts upper ri...