10-Day Weather Forecast - Roy, MT

Mostly sunny. Highs in the upper 40s. Northwest winds 10 to 20 mph with gusts to around 40 mph.

Partly cloudy. Lows in the upper 20s. West winds up to 10 mph with gusts to around 25 mph shifting to the south after midnight.

Warmer. Partly sunny. Highs 59 to 65. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the afternoon.

Not as cool. Mostly cloudy in the evening then becoming partly cloudy. Lows around 40. West winds 5 to 15 mph with gusts to around 30 mph.

Mostly clear. Highs 63 to 69. Lows in the lower 30s.

Mostly clear. Highs 63 to 69. Lows in the lower 30s.

Mostly clear. Highs 56 to 64. Lows in the mid 30s.

Mostly clear. Highs 56 to 64. Lows in the mid 30s.

Partly cloudy. Highs 56 to 62. Lows in the mid 30s.

Partly cloudy. Highs 56 to 62. Lows in the mid 30s.

Partly cloudy. Highs 56 to 62. Lows in the mid 30s.

Mostly cloudy. Lows in the mid 30s.

Cooler. Partly sunny with a 20 percent chance of rain and snow. Highs around 50.

Partly cloudy. Low temperature around 37F. Dew point will be around 20F with an average humidity of 45%. Winds will be 5 mph from the W.

Partly cloudy. High temperature around 49F. Dew point will be around 22F with an average humidity of 40%. Winds will be 4 mph from the W.

Partly cloudy. Low temperature around 33F. Dew point will be around 20F with an average humidity of 53%. Winds will be 2 mph from the NW.

Partly cloudy. High temperature around 43F. Dew point will be around 23F with an average humidity of 50%. Winds will be 1 mph from the NW.

Mostly cloudy. Low temperature around 33F. Dew point will be around 20F with an average humidity of 56%. Winds will be 4 mph from the W.