Weather Alert
Walnut Weather Warning NWS WEATHER ALERT FOR THE WALNUT, IL AREA - Issued: 1008 AM CDT Sat Sep 5 2026 Walnut Weather Warning

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Walnut, IL Weather Forecast

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Walnut, IL Weather Forecast

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Walnut IL weather - Clear - 87°F
Clear
87°F
Updated 10:53 am
Feels Like 93°F
Humidity 69%
Wind ENE 7 mph
Barometer  29.97 in
Dew Point 76°F
Walnut IL weather - Clear - 31°C
Clear
31°C
Updated 10:53 am
Feels Like 34°C
Humidity 69%
Wind ENE 11 km/h
Barometer  101.5 kPa
Dew Point 24°C
WX Settings

Walnut Weather Forecast

REST OF TODAY TONIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY FRIDAY
Walnut, IL Weather - Rest Of Today Sunny Walnut, IL Weather - Tonight Patchy Fog Walnut, IL Weather - Sunday Mostly Sunny Walnut, IL Weather - Sunday Night Clearing Walnut, IL Weather - Labor Day Sunny Walnut, IL Weather - Monday Night Partly Cloudy Walnut, IL Weather - Tuesday Partly Cloudy Walnut, IL Weather - Tuesday Night Partly Cloudy Walnut, IL Weather - Wednesday Partly Cloudy Walnut, IL Weather - Wednesday Night Partly Cloudy Walnut, IL Weather - Thursday Partly Cloudy Walnut, IL Weather - Friday Partly Cloudy
Sunny Patchy Fog Mostly Sunny Clearing Sunny Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Hi: 90°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Hi: 90°FHi: 32°C
Lo: 61°FLo: 16°C		 Hi: 90°FHi: 32°C
Lo: 61°FLo: 16°C		 Hi: 89°FHi: 32°C
Lo: 75°FLo: 24°C		 Hi: 89°FHi: 32°C
Lo: 75°FLo: 24°C		 Hi: 85°FHi: 29°C
Lo: 61°FLo: 16°C		 Hi: 85°FHi: 29°C
Lo: 61°FLo: 16°C		 Hi: 85°FHi: 29°C
Lo: 61°FLo: 16°C
POP = Probability of Precipitation.
Weather Outlook Updated: 806 AM CDT Sat Sep 05 2026 Walnut, IL Weather - WeatherWorld.com

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Issued: 642 AM CDT Sat Sep 5 2026

Key Messages

  • Dangerous heat continues through 7 PM this evening, with peak heat indices of 100 to 110 degrees. Extreme heat warnings and heat advisories are in effect.
  • After a brief reprieve, heat and humidity will return on Tuesday and Wednesday. The overall pattern has a 55-70% probability of above normal temperatures through mid- September.

Aviation

/12Z TAFS THROUGH 12Z SUNDAY/... Issued at 642 AM CDT Sat Sep 5 2026

Mostly, if not entirely, VFR conditions are expected through the TAF period. The...