10-Day Weather Forecast - Newcastle, WY

Mostly sunny. Highs in the mid 50s. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon.

Clear. Lows in the upper 20s. West winds 10 to 15 mph with gusts up to 25 mph.

Mostly sunny. Highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.

Partly cloudy. Lows in the mid 20s. North winds 10 to 15 mph becoming east 5 to 10 mph after midnight.

Mostly sunny in the morning then becoming partly cloudy. A 20 percent chance of snow. Highs in the mid 40s.

Mostly cloudy. Lows in the lower 20s.

Mostly cloudy. Highs in the mid 40s.

Mostly cloudy. Lows in the lower 20s.

Mostly cloudy. Highs in the lower 50s.

Becoming partly cloudy. Lows in the mid 20s.

Sunny. Highs in the mid 50s.

Clear. Lows in the mid 20s.

Sunny. Highs around 60.

Mostly clear. Low temperature around 34F. Dew point will be around 26F with an average humidity of 60%. Winds will be 8 mph from the E.

Partly cloudy. High temperature around 50F. Dew point will be around 29F with an average humidity of 53%. Winds will be 4 mph from the NW.

Mostly cloudy. Low temperature around 29F. Dew point will be around 25F with an average humidity of 67%. Winds will be 9 mph from the N.

Partly cloudy. High temperature around 47F. Dew point will be around 24F with an average humidity of 51%. Winds will be 7 mph from the NW.

Mostly cloudy. Low temperature around 29F. Dew point will be around 23F with an average humidity of 62%. Winds will be 5 mph from the N.