Armstrong, IL Weather Forecast

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Armstrong, IL Weather Forecast

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Armstrong IL weather  - Clear - 77°F
Clear
77°F
Updated 11:00 am
Feels Like 77°F
Humidity 62%
Wind ENE 10 mph
Barometer  30.09 in
Dew Point 63°F
Armstrong IL weather  - Clear - 25°C
Clear
25°C
Updated 11:00 am
Feels Like 25°C
Humidity 62%
Wind ENE 16 km/h
Barometer  101.9 kPa
Dew Point 17°C

Armstrong Weather Forecast

REST OF TODAY TONIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY SATURDAY
Armstrong, IL Weather - Rest Of Today Sunny Armstrong, IL Weather - Tonight Partly Cloudy Armstrong, IL Weather - Labor Day Sunny Armstrong, IL Weather - Monday Night Partly Cloudy Armstrong, IL Weather - Tuesday Sunny Armstrong, IL Weather - Tuesday Night Partly Cloudy Armstrong, IL Weather - Wednesday Partly Cloudy Armstrong, IL Weather - Wednesday Night Chance Of T-Storm Armstrong, IL Weather - Thursday Chance Of Showers Armstrong, IL Weather - Thursday Night Mostly Clear Armstrong, IL Weather - Friday Mostly Clear Armstrong, IL Weather - Saturday Mostly Clear
Sunny Partly Cloudy Sunny Partly Cloudy Sunny Partly Cloudy Partly Cloudy Chance of T-Storm Chance of Showers Mostly Clear Mostly Clear Mostly Clear
Hi: 81°FHi: 27°C
Lo: 60°FLo: 16°C Hi: 81°FHi: 27°C
Lo: 61°FLo: 16°C Hi: 89°FHi: 32°C
Hi: 91°FHi: 33°C
Lo: 70°FLo: 21°C
Hi: 91°FHi: 33°C
Lo: 70°FLo: 21°C
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
Hi: 85°FHi: 29°C
Lo: 59°FLo: 15°C
Hi: 85°FHi: 29°C
Lo: 59°FLo: 15°C
Hi: 85°FHi: 29°C
Lo: 59°FLo: 15°C
POP: 50% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 937 AM CDT Sun Sep 06 2026 Armstrong, IL Weather - WeatherWorld.com

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Issued: 557 AM CDT Sun Sep 6 2026

Key Messages

  • Welcomed relief is in store for today and Monday, with high temperatures in the 80s for most locations and dropping heat indices into the 80s, near 90.
  • High heat and humidity return Tuesday and Wednesday. Wednesday looks to be the hottest, bringing another risk for triple- digit heat index values. There is a 20-30% chance of heat indices greater than 100 degrees south of I-70 Wednesday afternoon.

Discussion

... Issued at 134 AM CDT Sun Sep 6 2026

A backdoor cold front pushed into the ar...