10-Day Weather Forecast - Alton, IL
- 77|56°F70% Chance of StormsHourly details
Today
77°FMostly cloudy. A chance of showers and thunderstorms this morning then showers and thunderstorms likely this afternoon. Some thunderstorms may be severe with damaging winds and large hail this morning. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 70 percent.
Tonight
56°FShowers and thunderstorms in the evening then partly cloudy after midnight. Locally heavy rainfall possible in the evening. Lows in the lower 50s. Southwest winds 15 to 20 mph with gusts up to 30 mph becoming west 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain near 100 percent.
- 69|53°F50% Chance of StormsHourly details
Day
69°FMostly sunny. A chance of showers and thunderstorms in the afternoon. Cooler with highs in the lower 70s. Northwest winds around 5 mph. Chance of rain 50 percent.
Night
53°FShowers with a chance of thunderstorms in the evening then a chance of showers after midnight. Lows in the lower 50s. North winds 5 to 10 mph. Chance of rain 90 percent.
- 65|45°FMostly SunnyHourly details
Day
65°FMostly sunny. Highs in the mid 60s. Northwest winds 10 to 15 mph.
Night
45°FMostly clear. Lows in the lower 40s.
- 66|49°FMostly SunnyHourly details
Day
66°FMostly sunny. Highs in the upper 60s.
Night
49°FPartly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s.
- 62|43°FPartly CloudyHourly details
Day
62°FPartly cloudy. Highs in the mid 60s. Lows in the lower 40s.
Night
43°FPartly cloudy. Highs in the mid 60s. Lows in the lower 40s.
Weekend Weather
- 64|49°FMostly SunnyHourly details
Day
64°FMostly clear. Highs in the upper 60s. Lows in the mid 40s.
Night
49°FMostly clear. Highs in the upper 60s. Lows in the mid 40s.
- 75|51°FSunny
Day
75°FSunny. Highs in the mid 70s.
Night
51°FClear. Low temperature around 51F. Dew point will be around 47F with an average humidity of 65%. Winds will be 6 mph from the SW.
- 72|54°FSunny
Day
72°FSunny. High temperature around 72F. Dew point will be around 49F with an average humidity of 60%. Winds will be 5 mph from the SW.
Night
54°FPartly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 54F. Dew point will be around 51F with an average humidity of 73%. Winds will be 5 mph from the S.
- 69|53°F60% Chance of Rain
Day
69°FMostly cloudy with a chance of rain. Chance of precipitation 55%. High temperature around 69F. Dew point will be around 52F with an average humidity of 66%. Winds will be 5 mph from the S.
Night
53°FCloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 53F. Dew point will be around 51F with an average humidity of 79%. Winds will be 2 mph from the S.
- 66|50°F40% Chance of Rain
Day
66°FMostly sunny with a chance of rain. Chance of precipitation 35%. High temperature around 66F. Dew point will be around 49F with an average humidity of 67%. Winds will be 3 mph from the NW.
Night
50°FPartly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 50F. Dew point will be around 47F with an average humidity of 73%. Winds will be 3 mph from the W.
