Allentown, IL Weather Forecast

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Allentown, IL Weather Forecast

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Allentown IL weather  - Clear - 54°F
Clear
54°F
Updated 12:00 am
Feels Like 47°F
Humidity 71%
Wind ENE 6 mph
Barometer  30.28 in
Dew Point 45°F
Allentown IL weather  - Clear - 12°C
Clear
12°C
Updated 12:00 am
Feels Like 8°C
Humidity 71%
Wind ENE 10 km/h
Barometer  102.5 kPa
Dew Point 7°C

Allentown Weather Forecast

REST OF TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY TUESDAY TUESDAY NIGHT WEDNESDAY THURSDAY FRIDAY
Allentown, IL Weather - Rest Of Tonight Clear Allentown, IL Weather - Saturday Sunny Allentown, IL Weather - Saturday Night Clear Allentown, IL Weather - Sunday Sunny Allentown, IL Weather - Sunday Night Clear Allentown, IL Weather - Monday Clear Allentown, IL Weather - Tuesday Clear Allentown, IL Weather - Tuesday Night Mostly Clear Allentown, IL Weather - Wednesday Mostly Clear Allentown, IL Weather - Thursday Mostly Clear Allentown, IL Weather - Friday Sunny
Clear Sunny Clear Sunny Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Sunny
Lo: 45°FLo: 7°C Hi: 71°FHi: 22°C
Lo: 49°FLo: 9°C Hi: 75°FHi: 24°C
Lo: 45°FLo: 7°C Hi: 71°FHi: 22°C
Lo: 45°FLo: 7°C
Hi: 71°FHi: 22°C
Lo: 45°FLo: 7°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 79°FHi: 26°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1037 PM CDT Fri Oct 02 2026 Allentown, IL Weather - WeatherWorld.com

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Allentown Forecast Discussion

Meteorlogic Glosserator
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Issued: 556 PM CDT Fri Oct 2 2026

Key Messages

  • A benign fall pattern will bring dry conditions, light winds, and pleasant temperatures this weekend and much of next week.

Discussion

... Issued at 141 PM CDT Fri Oct 2 2026

High pressure will build into the Great Lakes region tonight into Saturday, providing subsidence and cooler northeasterly flow for central IL to provide for mostly clear skies and seasonably cool temperatures. Lows tonight look to reach the mid 40s near and north of I-72 to around 50 south of I-70. Highs Saturday s...