10-Day Weather Forecast - Potomac, IL

Mostly cloudy in the morning then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Northeast winds around 5 mph. Chance of rain 20 percent.

Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. East winds around 5 mph. Chance of rain 20 percent.

Partly sunny. Humid with highs in the upper 80s. Southeast winds 5 to 10 mph.

Mostly clear. Humid with lows in the lower 70s. South winds 5 to 10 mph.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Mostly clear. Highs in the mid 90s. Lows in the mid 70s.

Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent. Heat index values up to 100.

Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 74F. Dew point will be around 72F with an average humidity of 81%. Winds will be 3 mph from the NW.

Sunny with a 50% chance for rain and thunderstorms. High temperature around 87F. Dew point will be around 72F with an average humidity of 74%. Winds will be 3 mph from the NW.

Clear with a 50% chance for rain and thunderstorms. Low temperature around 69F. Dew point will be around 68F with an average humidity of 80%. Winds will be 3 mph from the N.

Sunny with a 35% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 69F with an average humidity of 72%. Winds will be 1 mph from the N.

Clear with a 30% chance for rain and thunderstorms. Low temperature around 68F. Dew point will be around 66F with an average humidity of 79%. Winds will be 2 mph from the NE.