Rio, IL Weather Forecast

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Rio, IL Weather Forecast

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Rio IL weather  - Clear - 82°F
Clear
82°F
Updated 8:44 pm
Feels Like 90°F
Humidity 82%
Wind S 5 mph
Barometer  29.9 in
Dew Point 76°F
Rio IL weather  - Clear - 28°C
Clear
28°C
Updated 8:44 pm
Feels Like 32°C
Humidity 82%
Wind S 8 km/h
Barometer  101.2 kPa
Dew Point 24°C

Rio Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Rio, IL Weather - Tonight Clear Rio, IL Weather - Friday Sunny Rio, IL Weather - Friday Night Chance Of T-Storm Rio, IL Weather - Saturday Sunny Rio, IL Weather - Saturday Night Mostly Clear Rio, IL Weather - Sunday Mostly Sunny Rio, IL Weather - Sunday Night Mostly Clear Rio, IL Weather - Labor Day Partly Cloudy Rio, IL Weather - Monday Night Partly Cloudy Rio, IL Weather - Tuesday Mostly Sunny Rio, IL Weather - Tuesday Night Mostly Clear Rio, IL Weather - Wednesday Mostly Sunny
Clear Sunny Chance of T-Storm Sunny Mostly Clear Mostly Sunny Mostly Clear Partly Cloudy Partly Cloudy Mostly Sunny Mostly Clear Mostly Sunny
Lo: 75°FLo: 24°C Hi: 95°FHi: 35°C
Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C Hi: 85°FHi: 29°C
Lo: 61°FLo: 16°C Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 91°FHi: 33°C
Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 737 PM CDT Thu Sep 03 2026 Rio, IL Weather - WeatherWorld.com

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Issued: 627 PM CDT Thu Sep 3 2026

Key Messages

  • An Extreme Heat Warning remains in effect areawide through Friday and for parts of the area Saturday with dangerous heat index values between 100 and 109 degrees.
  • There is a very low chance (10-15%) for an isolated severe thunderstorm late this afternoon and evening and again Friday afternoon and evening. The primary threat will be damaging wind gusts. A marginal severe risk lingers over portions of east central Illinois Saturday.

Discussion

... Issued at 142 PM CDT Thu Sep 3 2026

Exces...