10-Day Weather Forecast - Newcastle, WY

Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 50s. Northwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.

Becoming partly cloudy. Lows around 30. Northwest winds 10 to 15 mph with gusts up to 25 mph.

Partly cloudy in the morning, then clearing. Highs in the mid 50s.

Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 30s.

Partly cloudy in the morning, then clearing. Highs in the mid 50s.

Mostly clear. Lows around 30.

Mostly sunny. Highs in the lower 50s.

Mostly clear. Lows in the upper 20s.

Sunny. Highs in the upper 50s.

Mostly clear. Lows in the lower 30s.

Mostly sunny. Highs in the upper 50s.

Mostly clear. Low temperature around 38F. Dew point will be around 27F with an average humidity of 57%. Winds will be 3 mph from the E.

Partly cloudy. High temperature around 57F. Dew point will be around 36F with an average humidity of 52%. Winds will be 8 mph from the NNW.

Partly cloudy. Low temperature around 38F. Dew point will be around 30F with an average humidity of 70%. Winds will be 8 mph from the ESE.

Mostly sunny. High temperature around 54F. Dew point will be around 37F with an average humidity of 58%. Winds will be 7 mph from the SE.

Mostly clear. Low temperature around 37F. Dew point will be around 30F with an average humidity of 70%. Winds will be 4 mph from the ENE.