Newcastle, UT Weather Forecast

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Newcastle, UT Weather Forecast

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Newcastle UT weather  - Lightning Observed - 68°F
Lightning Observed
68°F
Updated 1:05 am
Feels Like 60°F
Humidity 48%
Wind SSE 21 mph
Barometer  30.18 in
Dew Point 48°F
Newcastle UT weather  - Lightning Observed - 20°C
Lightning Observed
20°C
Updated 1:05 am
Feels Like 16°C
Humidity 48%
Wind SSE 34 km/h
Barometer  102.2 kPa
Dew Point 9°C

Newcastle Weather Forecast

TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY TUESDAY WEDNESDAY
Newcastle, UT Weather - Tonight Chance Of T-Storm Newcastle, UT Weather - Thursday Chance Of T-Storm Newcastle, UT Weather - Thursday Night Mostly Clear Newcastle, UT Weather - Friday Chance Of T-Storm Newcastle, UT Weather - Friday Night Chance Of T-Storm Newcastle, UT Weather - Saturday Sunny Newcastle, UT Weather - Saturday Night Clear Newcastle, UT Weather - Sunday Partly Cloudy Newcastle, UT Weather - Sunday Night Partly Cloudy Newcastle, UT Weather - Monday Partly Cloudy Newcastle, UT Weather - Tuesday Partly Cloudy Newcastle, UT Weather - Wednesday Chance Of Showers
Chance of T-Storm Chance of T-Storm Mostly Clear Chance of T-Storm Chance of T-Storm Sunny Clear Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Chance of Showers
Lo: 59°FLo: 15°C Hi: 80°FHi: 27°C
Lo: 55°FLo: 13°C Hi: 80°FHi: 27°C
Lo: 50°FLo: 10°C Hi: 79°FHi: 26°C
Lo: 49°FLo: 9°C Hi: 80°FHi: 27°C
Hi: 80°FHi: 27°C
Lo: 50°FLo: 10°C
Hi: 80°FHi: 27°C
Lo: 50°FLo: 10°C
Hi: 80°FHi: 27°C
Lo: 50°FLo: 10°C
Hi: 80°FHi: 27°C
POP: 50% POP: 30% POP: 20% POP: 10% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 1053 PM MDT Wed Sep 16 2026 Newcastle, UT Weather - WeatherWorld.com

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Issued: 1033 PM MDT Wed Sep 16 2026

Key Messages

.KEY MESSAGES, Issued 1253 PM MDT Wed Sep 16 2026...
  • Flash flooding remains the primary weather risk across southern and eastern Utah through Friday. Multiple rounds of showers and thunderstorms will bring the threat for locally heavy rainfall.
  • A Flood Watch for Flash Flooding has been issued from late tonight through Thursday morning for much of southern Utah, while the Watch extends through Thursday evening for much of Carbon and Emery Counties.
  • A marginal risk for severe thunderst...