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Lerna, IL Weather Forecast

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Lerna, IL Weather Forecast

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Lerna IL weather - Clear - 68°F
Clear
68°F
Updated 11:57 am
Feels Like 63°F
Humidity 52%
Wind S 7 mph
Barometer  30.26 in
Dew Point 50°F
Lerna IL weather - Clear - 20°C
Clear
20°C
Updated 11:57 am
Feels Like 17°C
Humidity 52%
Wind S 11 km/h
Barometer  102.4 kPa
Dew Point 10°C
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Lerna Weather Forecast

REST OF TODAY TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT
Lerna, IL Weather - Rest Of Today Sunny Lerna, IL Weather - Tonight Mostly Clear Lerna, IL Weather - Thursday Sunny Lerna, IL Weather - Thursday Night Partly Cloudy Lerna, IL Weather - Friday Mostly Sunny Lerna, IL Weather - Friday Night Mostly Cloudy Lerna, IL Weather - Saturday Mostly Cloudy Lerna, IL Weather - Saturday Night Chance Of Showers Lerna, IL Weather - Sunday Chance Of Showers Lerna, IL Weather - Sunday Night Mostly Cloudy Lerna, IL Weather - Monday Chance Of Showers Lerna, IL Weather - Monday Night Chance Of Showers
Sunny Mostly Clear Sunny Partly Cloudy Mostly Sunny Mostly Cloudy Mostly Cloudy Chance of Showers Chance of Showers Mostly Cloudy Chance of Showers Chance of Showers
Hi: 79°FHi: 26°C
 Lo: 55°FLo: 13°C Hi: 80°FHi: 27°C
 Lo: 51°FLo: 11°C Hi: 75°FHi: 24°C
 Hi: 71°FHi: 22°C
Lo: 55°FLo: 13°C		 Hi: 71°FHi: 22°C
Lo: 55°FLo: 13°C		 Lo: 51°FLo: 11°C Hi: 70°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C
POP: 40% POP: 60% POP: 40% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 1037 AM CDT Wed Oct 28 2026 Lerna, IL Weather - WeatherWorld.com

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Issued: 554 AM CDT Wed Oct 28 2026

Key Messages

  • Well above normal temperatures persist through Friday, with highs climbing to the mid 70s to around 80 degrees, around 15 degrees above normal.
  • Scattered light showers are possible Thursday into the weekend along a weak frontal boundary, but rain amounts will be light and localized.
  • A pronounced pattern shift this weekend through early next week brings high confidence in more widespread rainfall and cooler temperatures. There is a 50-60% chance areawide for over 1 inch of rain to fal...