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Casey, IL Weather Forecast

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Casey, IL Weather Forecast

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Casey IL weather - Clear - 67°F
Clear
67°F
Updated 11:31 am
Feels Like 63°F
Humidity 40%
Wind N 0 mph
Barometer  30.3 in
Dew Point 42°F
Casey IL weather - Clear - 19°C
Clear
19°C
Updated 11:31 am
Feels Like 17°C
Humidity 40%
Wind N 0 km/h
Barometer  102.6 kPa
Dew Point 6°C
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Casey Weather Forecast

REST OF TODAY TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY MONDAY NIGHT TUESDAY
Casey, IL Weather - Rest Of Today Sunny Casey, IL Weather - Tonight Mostly Clear Casey, IL Weather - Thursday Sunny Casey, IL Weather - Thursday Night Clear Casey, IL Weather - Friday Sunny Casey, IL Weather - Friday Night Mostly Clear Casey, IL Weather - Saturday Mostly Clear Casey, IL Weather - Saturday Night Partly Cloudy Casey, IL Weather - Sunday Partly Cloudy Casey, IL Weather - Monday Partly Cloudy Casey, IL Weather - Monday Night Mostly Cloudy Casey, IL Weather - Tuesday Mostly Cloudy
Sunny Mostly Clear Sunny Clear Sunny Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy
Hi: 75°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 75°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 71°FHi: 22°C
 Hi: 71°FHi: 22°C
Lo: 41°FLo: 5°C		 Hi: 71°FHi: 22°C
Lo: 41°FLo: 5°C		 Hi: 75°FHi: 24°C
Lo: 49°FLo: 9°C		 Hi: 75°FHi: 24°C
Lo: 49°FLo: 9°C		 Hi: 75°FHi: 24°C
Lo: 49°FLo: 9°C		 Hi: 69°FHi: 21°C
Lo: 49°FLo: 9°C		 Hi: 69°FHi: 21°C
Lo: 49°FLo: 9°C
POP = Probability of Precipitation.
Weather Outlook Updated: 847 AM CDT Wed Oct 21 2026 Casey, IL Weather - WeatherWorld.com

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Issued: 608 AM CDT Wed Oct 21 2026

Key Messages

  • Dry conditions and tranquil weather to prevail across central and southeast Illinois through Monday.
  • Above normal temperatures will dominate the region today through Monday, with afternoon highs climbing into the 70s.

Discussion

... Issued at 300 AM CDT Wed Oct 21 2026

The nice fall weather looks to continue through Monday across central and southeast IL, favorable weather for harvesting and outdoor activities.

The 08Z/3 am surface map shows 1032 mb high pressure over the southern Quebec...