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Glenarm, IL Weather Forecast

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Glenarm, IL Weather Forecast

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Glenarm IL weather - Clear - 59°F
Clear
59°F
Updated 6:59 am
Feels Like 63°F
Humidity 100%
Wind N 0 mph
Barometer  30.26 in
Dew Point 59°F
Glenarm IL weather - Clear - 15°C
Clear
15°C
Updated 6:59 am
Feels Like 17°C
Humidity 100%
Wind N 0 km/h
Barometer  102.5 kPa
Dew Point 15°C
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Glenarm Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Glenarm, IL Weather - Today Mostly Cloudy Glenarm, IL Weather - Tonight Mostly Cloudy Glenarm, IL Weather - Saturday Mostly Cloudy Glenarm, IL Weather - Saturday Night Mostly Cloudy Glenarm, IL Weather - Sunday Partly Sunny Glenarm, IL Weather - Sunday Night Clearing Glenarm, IL Weather - Monday Sunny Glenarm, IL Weather - Monday Night Partly Cloudy Glenarm, IL Weather - Tuesday Partly Sunny Glenarm, IL Weather - Tuesday Night Showers Likely Glenarm, IL Weather - Wednesday Chance Of Showers Glenarm, IL Weather - Wednesday Night Chance Of Showers
Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Sunny Clearing Sunny Partly Cloudy Partly Sunny Showers Likely Chance of Showers Chance of Showers
Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 71°FHi: 22°C
 Lo: 59°FLo: 15°C Hi: 71°FHi: 22°C
 Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
 Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
 Lo: 65°FLo: 18°C Hi: 79°FHi: 26°C
 Lo: 65°FLo: 18°C
POP: 60% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 637 AM CDT Fri Sep 25 2026 Glenarm, IL Weather - WeatherWorld.com

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Issued: 459 AM CDT Fri Sep 25 2026

Key Messages

  • Quiet through Midday Tuesday: Expect stable conditions across Central Illinois with highs in the upper 60s to mid-70s and only occasional sprinkles.
  • Warming Trend Midweek: Temperatures and humidity will rise Wednesday and Thursday, pushing high temperatures near 80F.
  • Heavy Rain Potential Wednesday-Friday: The primary weather hazard arrives Wednesday through Friday as a system bringing tropical moisture moves in. There is a 20-40% chance for rainfall to exceed 2 inches across our area...