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Greenville, IL Weather Forecast

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Greenville, IL Weather Forecast

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Greenville IL weather - Clear - 68°F
Clear
68°F
Updated 5:33 am
Feels Like 71°F
Humidity 100%
Wind N/A N/A mph
Barometer  30.01 in
Dew Point 68°F
Greenville IL weather - Clear - 20°C
Clear
20°C
Updated 5:33 am
Feels Like 22°C
Humidity 100%
Wind N/A 0 km/h
Barometer  101.6 kPa
Dew Point 20°C
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Greenville Weather Forecast

REST OF TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Greenville, IL Weather - Rest Of Tonight Partly Cloudy Greenville, IL Weather - Sunday Partly Sunny Greenville, IL Weather - Sunday Night Partly Cloudy Greenville, IL Weather - Monday Mostly Sunny Greenville, IL Weather - Monday Night Mostly Clear Greenville, IL Weather - Tuesday Chance Of T-Storm Greenville, IL Weather - Tuesday Night Chance Of T-Storm Greenville, IL Weather - Wednesday Chance Of T-Storm Greenville, IL Weather - Wednesday Night Partly Cloudy Greenville, IL Weather - Thursday Chance Of T-Storm Greenville, IL Weather - Thursday Night Chance Of T-Storm Greenville, IL Weather - Friday Chance Of Showers
Partly Cloudy Partly Sunny Partly Cloudy Mostly Sunny Mostly Clear Chance of T-Storm Chance of T-Storm Chance of T-Storm Partly Cloudy Chance of T-Storm Chance of T-Storm Chance of Showers
Lo: 65°FLo: 18°C Hi: 85°FHi: 29°C
 Lo: 61°FLo: 16°C Hi: 85°FHi: 29°C
 Lo: 69°FLo: 21°C Hi: 95°FHi: 35°C
 Lo: 69°FLo: 21°C Hi: 91°FHi: 33°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
Lo: 61°FLo: 16°C
POP: 20% POP: 50% POP: 20% POP: 20% POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 152 AM CDT Sun Sep 13 2026 Greenville, IL Weather - WeatherWorld.com

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Issued: 405 AM CDT Sun Sep 13 2026

Key Messages

  • Unseasonably hot weather is expected this week with heat index readings at or above 100 degrees in some locations Tuesday into Thursday.
  • There are chances (30-70%) of showers and thunderstorms each day that are mainly confined to parts of northeast Missouri and west- central Illinois near a stalled front.

Aviation

/00Z TAFS THROUGH 06Z MONDAY/... Issued at 1056 PM CDT Sat Sep 12 2026

VFR conditions with light winds are expected to continue through the TAF period. Confidence has increase...