10-Day Weather Forecast - Collinsville, IL
- 89|72°FMostly SunnyHourly details
Today
89°FMostly sunny. Isolated showers and thunderstorms this afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 20 percent.
Tonight
72°FMostly clear. Isolated showers and thunderstorms in the evening. Lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.
- 91|73°F50% Chance of StormsHourly details
Day
91°FPartly sunny. Scattered showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 102.
Night
73°FShowers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph becoming west after midnight. Chance of rain 80 percent. Heat index values up to 100 early in the evening.
- 85|72°F70% Chance of StormsHourly details
Day
85°FA chance of showers and thunderstorms in the morning then showers and thunderstorms likely in the afternoon. Humid with highs around 90. West winds around 5 mph. Chance of rain 70 percent. Heat index values up to 101.
Night
72°FShowers and thunderstorms likely. Lows in the lower 70s. Chance of rain 70 percent.
Weekend Weather
- 83|70°F50% Chance of StormsHourly details
Day
83°FMostly cloudy in the morning then becoming partly sunny. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
Night
70°FPartly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
- 84|67°F30% Chance of StormsHourly details
Day
84°FMostly sunny. A chance of showers and thunderstorms mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent.
Night
67°FMostly clear. Lows around 70. Highs around 90.
- 85|70°FMostly SunnyHourly details
Day
85°FMostly clear. Lows around 70. Highs around 90.
Night
70°FClear. Lows in the lower 70s.
- 88|73°FSunny
Day
88°FSunny. Highs in the lower 90s. Heat index values up to 100.
Night
73°FMostly clear. Low temperature around 72F. Dew point will be around 71F with an average humidity of 82%. Winds will be 2 mph from the NE.
- 87|70°FSunny
Day
87°FSunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 87F. Dew point will be around 73F with an average humidity of 72%. Winds will be 3 mph from the NE.
Night
70°FClear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 70F. Dew point will be around 71F with an average humidity of 84%. Winds will be 3 mph from the NE.
- 85|68°FSunny
Day
85°FSunny with widely scattered thunderstorms. Chance of storms 30%. High temperature around 85F. Dew point will be around 70F with an average humidity of 71%. Winds will be 3 mph from the N.
Night
68°FClear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 68F. Dew point will be around 68F with an average humidity of 83%. Winds will be 2 mph from the NE.
- 82|67°FSunny
Day
82°FSunny with widely scattered thunderstorms. Chance of storms 30%. High temperature around 82F. Dew point will be around 68F with an average humidity of 72%. Winds will be 4 mph from the NE.
Night
67°FClear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 67F. Dew point will be around 67F with an average humidity of 84%. Winds will be 2 mph from the NE.













