Newcastle, WY Weather Forecast
Weston County, Wyoming
Live radar, warnings and storm tracking for Newcastle, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Newcastle
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Newcastle, WY at a glance
Newcastle is home to about 3,326 people in Weston County, across 2.6 square miles. It ranks 21st by population of 25 places in Wyoming with a forecast here. The nearest neighbour with its own forecast is Lead, 41 miles away.
- County
- Weston County
- Population
- 3,326 2023 est.
- Land area
- 2.6 sq mi
- People per sq mi
- 1,299
- Forecast point
- 43.8503°N, 104.1965°W
How well can the network see Newcastle?
The nearest Doppler radar is KUDX (Rapid City, SD), to the ENE. Its lowest scan passes about 5,700 ft above Newcastle. The beam is above the lowest few thousand feet here, so a warning for Newcastle can come before anything looks dramatic on radar.
The closest weather station is KECS (Newcastle/Mondell Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Newcastle
- Lead, SD41 mi
- Hot Springs, SD47 mi
- Spearfish, SD48 mi
- Summerset, SD49 mi
- Rapid City, SD51 mi
- Sturgis, SD52 mi
- Box Elder, SD58 mi
- Belle Fourche, SD59 mi
Elsewhere in Wyoming
CheyenneCasperGilletteLaramieRock SpringsSheridanAll Wyoming forecasts →

