Barr, IL Weather Forecast

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Barr, IL Weather Forecast

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Barr IL weather  - Clear - 79°F
Clear
79°F
Updated 2:26 am
Feels Like 84°F
Humidity 79%
Wind SSE 5 mph
Barometer  29.94 in
Dew Point 72°F
Barr IL weather  - Clear - 26°C
Clear
26°C
Updated 2:26 am
Feels Like 29°C
Humidity 79%
Wind SSE 8 km/h
Barometer  101.4 kPa
Dew Point 22°C

Barr Weather Forecast

REST OF TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Barr, IL Weather - Rest Of Tonight Mostly Clear Barr, IL Weather - Friday Sunny Barr, IL Weather - Friday Night Partly Cloudy Barr, IL Weather - Saturday Mostly Sunny Barr, IL Weather - Saturday Night Partly Cloudy Barr, IL Weather - Sunday Mostly Clear Barr, IL Weather - Monday Mostly Clear Barr, IL Weather - Tuesday Mostly Clear Barr, IL Weather - Tuesday Night Mostly Clear Barr, IL Weather - Wednesday Mostly Clear Barr, IL Weather - Wednesday Night Chance Of Showers Barr, IL Weather - Thursday Chance Of T-Storm
Mostly Clear Sunny Partly Cloudy Mostly Sunny Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Chance of Showers Chance of T-Storm
Lo: 75°FLo: 24°C Hi: 99°FHi: 37°C
Lo: 75°FLo: 24°C Hi: 99°FHi: 37°C
Lo: 71°FLo: 22°C Hi: 95°FHi: 35°C
Lo: 69°FLo: 21°C
Hi: 95°FHi: 35°C
Lo: 69°FLo: 21°C
Hi: 95°FHi: 35°C
Lo: 69°FLo: 21°C
Hi: 99°FHi: 37°C
Lo: 75°FLo: 24°C
Hi: 99°FHi: 37°C
Lo: 75°FLo: 24°C
Lo: 75°FLo: 24°C Hi: 95°FHi: 35°C
POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Fri Sep 04 2026 Barr, IL Weather - WeatherWorld.com

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Issued: 1148 PM CDT Thu Sep 3 2026

Key Messages

  • A late summer heat wave will continue areawide through Saturday.
  • Temperatures are forecast to "cool" slightly Sunday into Labor Day before another period of near-record breaking heat returns by Wednesday.

Aviation

/00Z TAFS THROUGH 06Z SATURDAY/... Issued at 1147 PM CDT Thu Sep 3 2026

Dry and VFR flight conditions will persist through the TAF period with light winds, mainly southwesterly during the day Friday.


Watches / Warnings / Advisories

/WARNINGS/ADVISORIES... MO...Extreme Heat Warni...