Welcome To Alton
Weather Forecast for Alton
Alton, IL Weather :: 39F Overcast
39F Overcast
Tonight
Mostly cloudy, with a low around 30. Northeast wind 5 to 8 mph.
Friday
A 30 percent chance of showers, mainly after 5pm. Cloudy, with a high near 45. East wind around 10 mph.
Friday Night
A slight chance of showers before midnight, then a chance of showers and thunderstorms between midnight and 3am, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 38. East wind 7 to 10 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm. High near 58. East wind 7 to 17 mph becoming south in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 35. Breezy, with a south wind 17 to 26 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 44. Breezy.
Sunday Night
Mostly clear, with a low around 21.
Monday
Sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Partly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 39.