Halloween Weatherin Chicago, Illinois
October 31, 2026 · Saturday
Extended OutlookCool with a few showers possible
Expected high
46–55°
Expected low
34–43°
Rain risk
Moderate
44% of past years
Confidence: FairSlightly cooler than usual
What will it feel like?
Expect a chilly day in Chicago. There's some chance of a passing shower.
What should I wear?
A warm jacket and layers. Consider an umbrella or light rain jacket.
Good day for…
- BeachPoor
- Theme parkPoor
- Outdoor diningPoor
- HikingGood
- Outdoor eventPoor
What’s normal for this date?
- Typical high
- 53°
- Typical low
- 41°
- Rain chance
- 44%
This outlook: slightly cooler than usual.
Past weather on this date
- Last year (2025)53° / 41°
- 5-year average54° / 41°
- 10-year average52° / 40°
- Warmest in that span69° (2024)
- Coolest in that span28° (2023)
Details
- Sunrise7:22 AM
- Sunset5:45 PM
About this outlook
Based on long-range trends, recent patterns and historical weather. The exact weather this far ahead can't be known — this shows what's most likely.
Sources: Open-Meteo historical archive (ERA5), past 10 years · Recent observed weather patterns
Updated Tue, 06 Oct 2026 01:00:21 GMT