10-Day Weather Forecast - Newcastle, WY

Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. South winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 20 percent.

A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Becoming partly cloudy. Breezy with highs in the upper 80s. Southwest winds 10 to 15 mph, increasing to 20 to 30 mph in the afternoon.

Mostly clear. Lows in the mid 50s.

Sunny. Highs around 80.

Clear. Lows around 50.

Mostly sunny. Highs in the lower 80s.

Mostly clear. Lows in the mid 50s.

Mostly sunny. Highs in the mid 80s.

Mostly clear. Lows in the mid 50s.

Mostly sunny. Highs in the mid 80s.

Clear. Low temperature around 56F. Dew point will be around 28F with an average humidity of 31%. Winds will be 6 mph from the E.

Mostly sunny. High temperature around 82F. Dew point will be around 36F with an average humidity of 28%. Winds will be 4 mph from the SW.

Partly cloudy. Low temperature around 54F. Dew point will be around 37F with an average humidity of 41%. Winds will be 4 mph from the NE.

Sunny. High temperature around 79F. Dew point will be around 39F with an average humidity of 32%. Winds will be 3 mph from the SW.

Mostly clear. Low temperature around 52F. Dew point will be around 37F with an average humidity of 42%. Winds will be 4 mph from the NE.

Mostly sunny. High temperature around 78F. Dew point will be around 38F with an average humidity of 34%. Winds will be 5 mph from the SW.

Clear. Low temperature around 51F. Dew point will be around 36F with an average humidity of 43%. Winds will be 3 mph from the S.