10-Day Weather Forecast - Newcastle, WY

Mostly sunny in the morning then becoming partly cloudy. Highs in the upper 80s. South winds around 5 mph increasing to west 10 to 15 mph with gusts up to 30 mph in the afternoon.

Partly cloudy in the evening then mostly cloudy with a slight chance of rain after midnight. Lows in the upper 30s. North winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent.

Mostly cloudy with a slight chance of rain in the morning then partly cloudy in the afternoon. Much cooler with highs in the upper 50s. Northwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

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

Becoming mostly cloudy. Highs in the mid 60s.

Mostly cloudy. Lows in the mid 30s.

Partly cloudy. Highs in the mid 60s.

Partly cloudy. Lows in the lower 40s.

Partly cloudy. Highs in the upper 70s.

Partly cloudy. Lows in the mid 30s.

Partly cloudy. A slight chance of snow in the afternoon. Breezy and much cooler with highs in the lower 50s. Chance of snow 20 percent.

Partly cloudy. Low temperature around 24F. Dew point will be around 12F with an average humidity of 48%. Winds will be 7 mph from the N.

Sunny. High temperature around 47F. Dew point will be around 15F with an average humidity of 40%. Winds will be 6 mph from the SE.

Mostly clear. Low temperature around 25F. Dew point will be around 13F with an average humidity of 45%. Winds will be 5 mph from the E.

Partly cloudy. High temperature around 48F. Dew point will be around 17F with an average humidity of 40%. Winds will be 6 mph from the SE.

Partly cloudy. Low temperature around 27F. Dew point will be around 15F with an average humidity of 48%. Winds will be 5 mph from the SE.

Sunny. High temperature around 53F. Dew point will be around 22F with an average humidity of 43%. Winds will be 4 mph from the SE.

Mostly clear. Low temperature around 32F. Dew point will be around 21F with an average humidity of 51%. Winds will be 4 mph from the E.