Weather in Newcastle, UT
Updated 2026-08-11 11:45 local time · ZIP codes 84756
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
87°1% rain87°1% rain88°1% rain89°1% rain89°0% rain88°0% rain87°0% rain86°1% rain82°1% rain
75°1% rain
74°9% rain75°8% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 9%).
It feels like 85°F with winds near 6 mph.
82°F, 1% rain chance and 10 mph wind.
Visibility is around 10 mi; gusts may reach 19 mph.
Current temperature is 87°F, wind 6 mph, rain chance up to 9%.
UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.
Newcastle weather today
Sunny and 87°F in Newcastle, UT. Today's high is 89°F with a 3% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 25%, pressure is 30.24 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Newcastle
Sunrise is at 06:46 AM and sunset is at 08:31 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 84°F and a low near 63°F. The maximum rain chance is 57%.