Partly cloudy. A slight chance of thunderstorms after midnight. Near steady temperature in the lower 80s. Southeast winds 10 to 15 mph. Chance of precipitation 20 percent. Mostly sunny with a 20 ...

Mostly sunny. Highs around 90. Southeast winds 5 to 10 mph. Mostly clear in the evening then becoming partly cloudy. Lows in the mid 70s. South winds around 5 mph becoming east after midnight. Mostly ...

Partly sunny with a chance of showers and thunderstorms this morning then mostly cloudy with showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 90 ...

Patchy fog early in the morning. Showers likely and chance of thunderstorms early in the afternoon. Thunderstorms likely late in the afternoon. Highs in the mid to upper 70s. North winds 10 to 15 mph ...

Mostly clear. A slight chance of showers and thunderstorms this evening. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 20 percent. Mostly sunny. A slight chance of showers and ...

Mostly cloudy with a chance of showers with a slight chance of thunderstorms this evening then partly cloudy after midnight. Patchy fog after midnight. Lows in the mid 60s. Light southeast winds this ...

Mostly clear. Lows in the mid 70s. West winds 5 to 10 mph. Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Northwest winds around 5 mph. Chance ...

Mostly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Northwest winds around 5 mph. Chance of rain 20 percent. Mostly cloudy with a slight chance of ...

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Light and variable winds. Chance of rain 50 percent. Heat index values up to 104 in the afternoon ...

Partly cloudy. A slight chance of showers and thunderstorms late this evening. Patchy fog. Warm with lows in the lower 70s. Northwest winds around 5 mph late this evening becoming light and variable.

Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Saint Charles, IL ...