10-Day Weather Forecast - Sidney, MT

Partly sunny. Highs in the mid 50s. Southwest wind around 5 mph becoming northwest in the afternoon.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 20s. Northeast wind 5 to 10 mph becoming east after midnight.

Mostly cloudy. Highs in the lower 50s. Southeast wind 10 to 15 mph.

A chance of rain and snow. Lows in the mid 30s.

A slight chance of rain and snow. Highs in the mid 60s.

A slight chance of rain. Lows in the lower 20s.

Mostly sunny. Much cooler with highs in the upper 30s.

Mostly clear. Lows 15 to 20. Highs in the upper 40s.

Mostly clear. Lows 15 to 20. Highs in the upper 40s.

Mostly clear. Lows in the lower 20s.

Mostly sunny. Highs in the mid 50s.

Mostly clear. Low temperature around 30F. Dew point will be around 22F with an average humidity of 58%. Winds will be 8 mph from the SE.

Partly cloudy. High temperature around 60F. Dew point will be around 30F with an average humidity of 49%. Winds will be 9 mph from the SE.

Partly cloudy. Low temperature around 36F. Dew point will be around 33F with an average humidity of 67%. Winds will be 2 mph from the S.

Mostly sunny. High temperature around 57F. Dew point will be around 34F with an average humidity of 55%. Winds will be 4 mph from the NW.

Mostly clear. Low temperature around 33F. Dew point will be around 31F with an average humidity of 70%. Winds will be 3 mph from the N.

Mostly sunny. High temperature around 50F. Dew point will be around 31F with an average humidity of 59%. Winds will be 3 mph from the NW.

Mostly clear. Low temperature around 31F. Dew point will be around 28F with an average humidity of 73%. Winds will be 2 mph from the SE.