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Percival, IL Weather Forecast

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Percival, IL Weather Forecast

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Percival IL weather - Clear - 74°F
Clear
74°F
Updated 6:33 pm
Feels Like 72°F
Humidity 42%
Wind N 0 mph
Barometer  30.03 in
Dew Point 49°F
Percival IL weather - Clear - 23°C
Clear
23°C
Updated 6:33 pm
Feels Like 22°C
Humidity 42%
Wind N 0 km/h
Barometer  101.7 kPa
Dew Point 10°C
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Percival Weather Forecast

THIS AFTERNOON TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT
Percival, IL Weather - This Afternoon Sunny Percival, IL Weather - Tonight Clear Percival, IL Weather - Tuesday Sunny Percival, IL Weather - Tuesday Night Partly Cloudy Percival, IL Weather - Wednesday Mostly Sunny Percival, IL Weather - Wednesday Night Mostly Cloudy Percival, IL Weather - Thursday Chance Of Showers Percival, IL Weather - Thursday Night Showers Likely Percival, IL Weather - Friday Chance Of T-Storm Percival, IL Weather - Friday Night Chance Of Showers Percival, IL Weather - Saturday Chance Of Showers Percival, IL Weather - Saturday Night Chance Of Showers
Sunny Clear Sunny Partly Cloudy Mostly Sunny Mostly Cloudy Chance of Showers Showers Likely Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers
Hi: 79°FHi: 26°C
 Lo: 51°FLo: 11°C Hi: 81°FHi: 27°C
 Lo: 60°FLo: 16°C Hi: 89°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 61°FLo: 16°C Hi: 71°FHi: 22°C
 Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
Lo: 55°FLo: 13°C		 Hi: 70°FHi: 21°C
Lo: 55°FLo: 13°C
POP: 50% POP: 60% POP: 60% POP: 50% POP: 50% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM CDT Mon Sep 28 2026 Percival, IL Weather - WeatherWorld.com

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Issued: 620 PM CDT Mon Sep 28 2026

Key Messages

  • Quiet and nice early fall weather is expected to continue across central and southeast IL through Tuesday night as temperatures continue to modify.
  • A chance of showers and isolated thunderstorms will occur over the IL river valley Wednesday and Wednesday night, with more widespread rain over the area on Thursday into Friday:
  • NBM has 50-70% chance of rainfall totals over 1.5 inches over central and southeast IL from Wednesday night through Friday night, with southeast IL seeing their ...