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Deer Plain, IL Weather Forecast

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Deer Plain, IL Weather Forecast

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Deer Plain IL weather - Clear - 80°F
Clear
80°F
Updated 8:23 pm
Feels Like 85°F
Humidity 62%
Wind E 3 mph
Barometer  29.85 in
Dew Point 66°F
Deer Plain IL weather - Clear - 27°C
Clear
27°C
Updated 8:23 pm
Feels Like 30°C
Humidity 62%
Wind E 5 km/h
Barometer  101 kPa
Dew Point 19°C
WX Settings

Deer Plain Weather Forecast

TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Deer Plain, IL Weather - Tonight Partly Cloudy Deer Plain, IL Weather - Sunday Chance Of T-Storm Deer Plain, IL Weather - Sunday Night Chance Of T-Storm Deer Plain, IL Weather - Monday Chance Of T-Storm Deer Plain, IL Weather - Monday Night Chance Of Showers Deer Plain, IL Weather - Tuesday Mostly Cloudy Deer Plain, IL Weather - Tuesday Night Mostly Cloudy Deer Plain, IL Weather - Wednesday Partly Cloudy Deer Plain, IL Weather - Wednesday Night Partly Cloudy Deer Plain, IL Weather - Thursday Partly Sunny Deer Plain, IL Weather - Thursday Night Chance Of Showers Deer Plain, IL Weather - Friday Chance Of Showers
Partly Cloudy Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Showers Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Sunny Chance of Showers Chance of Showers
Lo: 70°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 61°FLo: 16°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 69°FHi: 21°C
Lo: 51°FLo: 11°C		 Hi: 69°FHi: 21°C
Lo: 51°FLo: 11°C		 Hi: 71°FHi: 22°C
Lo: 51°FLo: 11°C		 Hi: 71°FHi: 22°C
Lo: 51°FLo: 11°C		 Hi: 75°FHi: 24°C
 Hi: 79°FHi: 26°C
Lo: 55°FLo: 13°C		 Hi: 79°FHi: 26°C
Lo: 55°FLo: 13°C
POP: 50% POP: 70% POP: 70% POP: 50% POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 438 PM CDT Sat Sep 19 2026 Deer Plain, IL Weather - WeatherWorld.com

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Issued: 619 PM CDT Sat Sep 19 2026

Key Messages

  • A cold front will slowly drift southward through the region, bringing widespread showers and thunderstorms late Sunday into Monday.
  • The pattern shift will result in cooler, more seasonable temperatures through next week.

Aviation

/00Z TAFS THROUGH 06Z MONDAY/... Issued at 604 PM CDT Sat Sep 19 2026

The chances for showers will begin to increase with this set of TAFS including at UIN late tonight into Sunday with a chance (30-40%) between 11-15Z increasing to 40-60% though 18Z. There is ...