Weather Alert
Lyons Weather Warning NWS WEATHER ALERT FOR THE LYONS, IL AREA - Issued: 903 PM CDT Fri Sep 4 2026 Lyons Weather Warning

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Lyons, IL Weather Forecast

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Lyons, IL Weather Forecast

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Lyons IL weather - Clouds - 87°F
Clouds
87°F
Updated 10:39 pm
Feels Like 85°F
Humidity 65%
Wind N 0 mph
Barometer  29.92 in
Dew Point 74°F
Lyons IL weather - Clouds - 31°C
Clouds
31°C
Updated 10:39 pm
Feels Like 29°C
Humidity 65%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 23°C
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Lyons Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Lyons, IL Weather - Tonight Chance Of T-Storm Lyons, IL Weather - Saturday Patchy Fog Lyons, IL Weather - Saturday Night Clearing Lyons, IL Weather - Sunday Mostly Sunny Lyons, IL Weather - Sunday Night Partly Cloudy Lyons, IL Weather - Labor Day Partly Cloudy Lyons, IL Weather - Monday Night Partly Cloudy Lyons, IL Weather - Tuesday Partly Cloudy Lyons, IL Weather - Tuesday Night Partly Cloudy Lyons, IL Weather - Wednesday Partly Cloudy Lyons, IL Weather - Wednesday Night Chance Of Showers Lyons, IL Weather - Thursday Partly Cloudy
Chance of T-Storm Patchy Fog Clearing Mostly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Chance of Showers Partly Cloudy
Lo: 75°FLo: 24°C Hi: 85°FHi: 29°C
 Lo: 69°FLo: 21°C Hi: 79°FHi: 26°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 65°FLo: 18°C Hi: 89°FHi: 32°C
 Lo: 71°FLo: 22°C Hi: 90°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 81°FHi: 27°C
POP: 50% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 856 PM CDT Fri Sep 04 2026 Lyons, IL Weather - WeatherWorld.com

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Issued: 835 PM CDT Fri Sep 4 2026

Key Messages

  • Chance of scattered showers and thunderstorms tonight.
  • Gradually turning cooler and less humid this weekend, though remaining seasonably warm.
  • Moderate to high swim risk expected late Saturday into early Sunday during the final weekend of beach season.

Discussion

... Issued at 314 PM CDT Fri Sep 4 2026

Breezy east-northeasterly winds this morning in the wake of the outflow boundary have significantly impacted the ability to heat up through early afternoon. This has particularly been tru...