April 18 is generally a great time to visit Chicago. While there is a slight chance of rain (33%), showers are usually brief. Expect comfortable 12°C weather. Expect a bustling atmosphere in Chicago right now—this is when the city truly comes alive with visitors. Note: April 18 is Good Friday in Chicago, so expect special events, closures, and festive atmosphere.
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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 April 18
"Mild & Comfortable. Expect average highs of 12.4°C. 33% chance of snow."
What to Wear in Chicago in April
Based on historical data for April 18, Chicago typically experiences temperatures between 4.6°C and 12.4°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 33% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Chicago
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
12.4°C
Daytime Peak
Average Low
4.6°C
Nighttime Low
Feels Like
11.1°C
🌤️ Minor difference
Snow Chance
33%
Avg 2.1mm if it snows
Snowfall
0.2 cm
~33% chance
Pressure
1015.4 hPa
Medium volatility
Chicago Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
❓ Expect variable conditions. Have flexible plans and pack for multiple weather scenarios.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 21 min to burn
Type III-IV
🟡 32 min to burn
Type V-VI
🟢 53 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
7.7°C
Dry air
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
Good Friday
Flight Traffic
High
93/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~1,276
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Chicago
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:06
☀️ Noon
11:50
🌇 Sunset
18:35
⏱️ Daylight
13h 28m
Wind Speed
24.8 km/h
Moderate wind
Sunshine
8.8 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
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
⛅ Good
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 April 18 averages 12.4°C with a 33% precipitation probability. Wedding/Outdoor Event Score: 69/100."
— 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
April 24
12.6°C • 26% rain
Score
75
April 25
12.7°C • 27% rain
Score
75
April 23
12.5°C • 27% rain
Score
74
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (April 18) in other destinations
Barcelona
Spain
Rome
Italy
Prague
Czech Republic
London
United Kingdom
Amsterdam
Netherlands
🌍 Explore the same date in different destinations around the world
📍 Is Chicago Worth Visiting on April 18?
Planning a trip to Chicago on April 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 12.4°C with a 33% historical precipitation risk.
🎉 Local Event: The date coincides with Good Friday, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 1,276 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest April 18 recorded in the last 30 years saw temperatures hit 26.7°C in 2025, while the coldest dropped to -1°C in 2023.