10-Day Weather Forecast - Newcastle, WY

Partly cloudy in the morning then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Northwest winds around 5 mph becoming south with gusts up to 20 mph in the afternoon. Chance of rain 50 percent.

Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 50s. East winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 50 percent.

Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 50 percent.

Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 50s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 40 percent.

Mostly sunny. Highs in the lower 90s.

Mostly clear. Lows in the mid 60s.

Sunny. Highs in the upper 90s.

Clear. Lows in the upper 60s.

Mostly sunny. Hot with highs around 103.

Clear. Lows in the lower 70s.

Mostly sunny. Hot with highs around 103.

Mostly clear. Lows in the lower 70s.

Partly cloudy in the morning then clearing. Highs in the upper 90s.

Clear. Low temperature around 72F. Dew point will be around 48F with an average humidity of 35%. Winds will be 10 mph from the E.

Sunny. High temperature around 91F. Dew point will be around 48F with an average humidity of 29%. Winds will be 8 mph from the SE.

Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 70F. Dew point will be around 49F with an average humidity of 38%. Winds will be 8 mph from the E.

Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 90F. Dew point will be around 50F with an average humidity of 31%. Winds will be 7 mph from the SE.

Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 69F. Dew point will be around 48F with an average humidity of 39%. Winds will be 8 mph from the E.