Alta, IL Weather Forecast

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Alta, IL Weather Forecast

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Alta IL weather  - Clear - 72°F
Clear
72°F
Updated 1:40 pm
Feels Like 80°F
Humidity 87%
Wind W 7 mph
Barometer  30.08 in
Dew Point 68°F
Alta IL weather  - Clear - 22°C
Clear
22°C
Updated 1:40 pm
Feels Like 27°C
Humidity 87%
Wind W 11 km/h
Barometer  101.8 kPa
Dew Point 20°C

Alta Weather Forecast

THIS AFTERNOON TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT
Alta, IL Weather - This Afternoon Chance Of T-Storm Alta, IL Weather - Tonight Chance Of T-Storm Alta, IL Weather - Thursday Mostly Cloudy Alta, IL Weather - Thursday Night Mostly Clear Alta, IL Weather - Friday Sunny Alta, IL Weather - Friday Night Mostly Clear Alta, IL Weather - Saturday Chance Of Showers Alta, IL Weather - Saturday Night Partly Cloudy Alta, IL Weather - Sunday Chance Of Showers Alta, IL Weather - Sunday Night Chance Of Showers Alta, IL Weather - Monday Chance Of Showers Alta, IL Weather - Monday Night Chance Of T-Storm
Chance of T-Storm Chance of T-Storm Mostly Cloudy Mostly Clear Sunny Mostly Clear Chance of Showers Partly Cloudy Chance of Showers Chance of Showers Chance of Showers Chance of T-Storm
Hi: 75°FHi: 24°C
Lo: 69°FLo: 21°C Hi: 80°FHi: 27°C
Lo: 59°FLo: 15°C Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C Hi: 85°FHi: 29°C
Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C
Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C
Lo: 69°FLo: 21°C
POP: 90% POP: 20% POP: 40% POP: 30% POP: 30% POP: 30% POP: 60%
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 AM CDT Wed Sep 09 2026 Alta, IL Weather - WeatherWorld.com

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Issued: 1222 PM CDT Wed Sep 9 2026

Key Messages

  • Isolated strong to severe thunderstorms south of Interstate 70 this afternoon carry a risk of localized damaging wind gusts.
  • Localized heavy rainfall tonight will yield pockets of 1 to 2 inch totals near and south of I-70, leading to potential ponding in low-lying areas.

Discussion

... Issued at 1222 PM CDT Wed Sep 9 2026

Regional radar mosaic indicates a band of showers along a confluence zone dissipating as it tracks east near I-55 early this afternoon. An outflow boundary well ahead ...