10-Day Weather Forecast - Great Falls, MD

Patchy fog in the morning. A chance of showers with a slight chance of thunderstorms in the morning then showers with a chance of thunderstorms in the afternoon. Highs around 80. West winds around 5 mph. Chance of rain near 100 percent.

Mostly cloudy. Patchy fog in the evening. Showers likely with a chance of thunderstorms in the evening then a chance of showers after midnight. Lows in the lower 60s. West winds around 5 mph. Chance of rain 70 percent.

Mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph.

Mostly clear. Lows in the mid 50s.

Sunny. Highs in the upper 70s.

Mostly clear. Lows in the mid 50s.

Mostly sunny. Highs in the mid 70s.

Partly cloudy. Lows in the lower 50s.

Mostly sunny. Highs in the lower 70s.

Mostly clear. Lows in the mid 50s.

Sunny. Highs in the mid 70s.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 54F. Dew point will be around 50F with an average humidity of 75%. Winds will be 2 mph from the N.

Sunny. High temperature around 72F. Dew point will be around 51F with an average humidity of 59%. Winds will be 4 mph from the NW.

Clear. Low temperature around 58F. Dew point will be around 52F with an average humidity of 70%. Winds will be 1 mph from the W.

Sunny. High temperature around 77F. Dew point will be around 54F with an average humidity of 60%. Winds will be 1 mph from the NW.

Clear. Low temperature around 61F. Dew point will be around 56F with an average humidity of 72%. Winds will be 1 mph from the S.

Sunny. High temperature around 81F. Dew point will be around 59F with an average humidity of 61%. Winds will be 2 mph from the SW.

Mostly clear. Low temperature around 64F. Dew point will be around 59F with an average humidity of 72%. Winds will be 3 mph from the SW.