October 17 is generally a great time to visit Chicago. While there is a slight chance of rain (25%), showers are usually brief. Expect comfortable 15°C weather. Expect a bustling atmosphere in Chicago right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Chicago
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
The first Internet café in the United St...
Safety
Moderate Safety
GPI: 2.44
Chicago Weather Forecast for October 17
"Mild & Comfortable. Expect average highs of 14.7°C. 25% chance of rain."
What to Wear in Chicago in October
Based on historical data for October 17, Chicago typically experiences temperatures between 8.1°C and 14.7°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (25% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Chicago
Smart Suitcase
- Light Jacket
- Long Pants
Average High
14.7°C
Daytime Peak
Average Low
8.1°C
Nighttime Low
Feels Like
14.6°C
🌤️ Feels accurate
Rain Chance
25%
Avg 1.4mm if it rains
Cloud Cover
55%
Overcast
Pressure
1016.1 hPa
Medium volatility
Chicago Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 57 min to burn
Type III-IV
🟡 86 min to burn
Type V-VI
🟢 143 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
9.1°C
Dry air
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
89/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~1,222
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Chicago
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:06
☀️ Noon
11:37
🌇 Sunset
17:07
⏱️ Daylight
11h 1m
Wind Speed
24.7 km/h
Moderate wind
Sunshine
7.5 hrs
Direct Sun (Cloud-free)
Humidity
69%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Chicago
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Chicago
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Chicago on October 17 averages 14.7°C with a 25% precipitation probability. Wedding/Outdoor Event Score: 88/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Chicago Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
October 10
18°C • 20% rain
Score
94
October 11
17.7°C • 24% rain
Score
91
October 20
15°C • 22% rain
Score
91
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 17) in other destinations
Rome
Italy
Barcelona
Spain
Prague
Czech Republic
London
United Kingdom
Amsterdam
Netherlands
🌍 Explore the same date in different destinations around the world
📍 Is Chicago Worth Visiting on October 17?
Planning a trip to Chicago on October 17? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 14.7°C with a 25% historical precipitation risk.
✈️ Travel Logistics: Approximately 1,222 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest October 17 recorded in the last 30 years saw temperatures hit 23.5°C in 2016, while the coldest dropped to 1.7°C in 2022.