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Boulder, IL Weather Forecast

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Boulder, IL Weather Forecast

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Boulder IL weather - Clear - 52°F
Clear
52°F
Updated 1:12 am
Feels Like 54°F
Humidity 89%
Wind N/A N/A mph
Barometer  30.25 in
Dew Point 49°F
Boulder IL weather - Clear - 11°C
Clear
11°C
Updated 1:12 am
Feels Like 12°C
Humidity 89%
Wind N/A 0 km/h
Barometer  102.4 kPa
Dew Point 9°C
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Boulder Weather Forecast

OVERNIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Boulder, IL Weather - Overnight Mostly Cloudy Boulder, IL Weather - Tuesday Mostly Cloudy Boulder, IL Weather - Tuesday Night Clearing Boulder, IL Weather - Wednesday Sunny Boulder, IL Weather - Wednesday Night Clear Boulder, IL Weather - Thursday Sunny Boulder, IL Weather - Thursday Night Partly Cloudy Boulder, IL Weather - Friday Partly Sunny Boulder, IL Weather - Friday Night Chance Of Showers Boulder, IL Weather - Saturday Chance Of Showers Boulder, IL Weather - Saturday Night Chance Of Showers Boulder, IL Weather - Sunday Chance Of Showers
Mostly Cloudy Mostly Cloudy Clearing Sunny Clear Sunny Partly Cloudy Partly Sunny Chance of Showers Chance of Showers Chance of Showers Chance of Showers
Lo: 49°FLo: 9°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 79°FHi: 26°C
 Lo: 51°FLo: 11°C Hi: 81°FHi: 27°C
 Lo: 55°FLo: 13°C Hi: 81°FHi: 27°C
 Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
 Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
Lo: 59°FLo: 15°C
POP: 20% POP: 40% POP: 50% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1029 PM CDT Mon Oct 26 2026 Boulder, IL Weather - WeatherWorld.com

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Issued: 1046 PM CDT Mon Oct 26 2026

Key Messages

  • Warm and mostly dry weather is forecast through the end of the week.
  • There is a 30-50% chance of light rain this weekend. Widespread rainfall is not expected.

Aviation

/00Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 1036 PM CDT Mon Oct 26 2026

Recent observation trends at KSUS suggest fog development, as low as IFR at times, is more likely again tonight. Conversely, conditions at KJEF are trending drier than previously forecast. As a result, conditions were degraded at KSUS in this TAF is...