10-Day Weather Forecast - Newcastle, WY

Mostly sunny. Highs in the upper 50s. Northwest winds around 5 mph becoming southeast in the afternoon.

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 20s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Partly cloudy. Highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph.

Partly cloudy in the evening then clearing. Lows in the upper 20s. Northwest winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Mostly sunny. Highs in the lower 60s.

Partly cloudy. Lows in the lower 30s.

Becoming mostly cloudy. Highs around 60.

Mostly cloudy. A chance of rain in the evening then a chance of snow with a slight chance of rain after midnight. Lows in the upper 20s. Chance of precipitation 30 percent.

Mostly cloudy with a 20 percent chance of snow. Cooler with highs in the lower 40s.

Mostly cloudy with a 40 percent chance of snow. Lows in the lower 20s.

Mostly cloudy with a 40 percent chance of snow. Highs in the lower 40s.

Mostly cloudy with a 20 percent chance of snow. Lows 15 to 20.

Becoming partly cloudy. Highs in the lower 40s.

Clear. Low temperature around 22F. Dew point will be around 18F with an average humidity of 74%. Winds will be 2 mph from the E.

Sunny. High temperature around 38F. Dew point will be around 21F with an average humidity of 59%. Winds will be 3 mph from the S.

Mostly clear. Low temperature around 23F. Dew point will be around 18F with an average humidity of 68%. Winds will be 3 mph from the E.

Mostly cloudy. High temperature around 39F. Dew point will be around 22F with an average humidity of 57%. Winds will be 2 mph from the S.

Cloudy. Low temperature around 24F. Dew point will be around 19F with an average humidity of 72%. Winds will be 2 mph from the E.