10-Day Weather Forecast - Gillespie, IL

Sunny, hot with highs in the upper 90s. Northwest winds around 5 mph. Heat index values up to 108.

Partly cloudy. Lows in the upper 60s. Northeast winds around 5 mph. Heat index values up to 104 early in the evening.

Mostly sunny. Not as warm with highs in the upper 80s. East winds 5 to 10 mph.

Mostly clear. Lows in the lower 60s. East winds 5 to 10 mph.

Sunny. Highs in the upper 80s. East winds around 5 mph.

Mostly clear. Hot. Lows in the lower 60s.

Mostly clear. Hot. Highs in the mid 90s.

Mostly clear. Hot. Lows in the lower 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the upper 90s. Heat index values up to 105.

Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.

Partly cloudy. A chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.

Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 20 percent.

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.

Clear. Low temperature around 63F. Dew point will be around 60F with an average humidity of 69%. Winds will be 3 mph from the E.

Sunny. High temperature around 88F. Dew point will be around 60F with an average humidity of 55%. Winds will be 2 mph from the S.

Clear. Low temperature around 66F. Dew point will be around 60F with an average humidity of 64%. Winds will be 3 mph from the SE.

Sunny. High temperature around 89F. Dew point will be around 62F with an average humidity of 54%. Winds will be 5 mph from the S.

Clear. Low temperature around 68F. Dew point will be around 62F with an average humidity of 65%. Winds will be 3 mph from the S.