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Chicago in July

Chicago Weather in July

🇺🇸 United States

27°C
High
21°C
Low
11
Rain Days
12h
Sunshine
65%
Humidity

North America › 🇺🇸 United States › Chicago

Updated: March 2026

Is July a Good Time to Visit Chicago?

6/10
Good

July is a good time to visit Chicago (6/10). With 12 daily sunshine hours and only 11 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 2nd sunniest of the year in Chicago. Culture-focused travellers and those who prefer lighter crowds will find July a practical choice, with prices running lower than peak June without sacrificing all the good weather. August offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Chicago's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.

vs June:24°C avg high

July weather in Chicago is defined by a daily temperature swing from 21°C at night to 27°C during the afternoon. Humidity averages 65%, and you can count on around 12 sunshine hours each day. That combination makes July warm and lush, though dressing in breathable fabrics keeps things manageable.

27°C

Avg High

21°C

Avg Low

11 days

Rain Days

12h

Sunshine

65%

Humidity

Temperature in Chicago in July

The 6°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 19 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 81°F average high, 70°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in July

Monthly Precipitation (mm)

What to Wear in Chicago in July

Morning21°CBefore the day warms up
Afternoon27°CPeak daytime temperature
Evening24°CAfter sunset cools down

Packing for Chicago in July means dressing for 27°C days and 21°C evenings. A light cotton tee with a casual overshirt works well at 27°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 21°C, a modest 6°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. A compact foldable umbrella weighs almost nothing and earns its keep across 11 potential rainy days.

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Local tip: Layers are more practical than a single heavy garment in Chicago. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.

Events in Chicago in July

July has no major festivals or public holidays in Chicago, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Chicago in July

Based on 27°C average highs and 11 rainy days

  • Light layers for morning and evening
  • Breathable T-shirts and comfortable trousers
  • UV-protective sunglasses
  • Quick-dry travel towel
  • Anti-chafe balm for long walking days
  • Moisture-wicking synthetic fabrics for active days
  • Compact folding umbrella
  • Waterproof outer layer or packable rain jacket
  • Quick-dry clothing that recovers fast after a shower
  • SPF 30+ sunscreen
  • Comfortable walking shoes (a second pair lets the first air out overnight)
  • Universal travel adapter
  • Small day pack for city exploration
  • Reusable water bottle

Best Activities in Chicago in July

  • Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 27°C, the temperature is ideal for extended walking without overheating
  • Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
  • Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
  • Day trip to the surrounding countryside or coastFull day (depart by 8am)July is reliably dry enough for rural day trips without weather risk
  • Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
  • Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
  • Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
  • Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningJuly brings distinct seasonal changes to public green spaces worth exploring
  • Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in July, with vendors setting up specifically for warm evenings

Why is Chicago warm in July?

July in Chicago reflects a mid-latitude climate pattern, with temperatures averaging 27°C by day and 21°C overnight. The city sits at 42 degrees north latitude, where the balance between solar radiation and heat loss drives conditions that are neither extreme nor static. The warm temperatures reflect a stable high-pressure pattern typical of the season, which suppresses cloud formation and concentrates solar energy at the surface. Day-to-night temperature variation of 6°C is moderate and manageable with a single mid-layer. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Chicago in July

In July, Chicago experiences average highs of 27°C (81°F) and lows of 21°C (70°F). Expect around 11 rainy days and 12 hours of sunshine per day, with humidity averaging 65%. The 6°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Chicago typically sees 11 rainy days in July, with total precipitation of around 93mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Chicago typically sees 4-6 fewer rain days than July.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Chicago in July. Daytime temperatures of 27°C are pleasant, but the evening drop to 21°C means a jacket is essential if you plan to be out after dark. With 11 rainy days, bring a compact umbrella or waterproof jacket for unexpected showers. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
Yes, July is an excellent time to visit Chicago. With 12 daily sunshine hours and only 11 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 27°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Chicago in July is 27°C (81°F), and the average low is 21°C (70°F). The mean daily temperature is approximately 24°C (75°F). The day-to-night range of 6°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Chicago is generally July. July offers the most sunshine at 12 hours per day and only 11 rainy days. Average temperatures reach 27°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around July gives you the best chance of dry, bright weather.
July is shoulder or low season in Chicago, meaning fewer tourists and generally lower prices than peak months. With 12 sunshine hours and 11 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In July, Chicago suits a range of activities thanks to mild temperatures around 27°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 12 hours of sunshine, parks and waterfront walks are particularly enjoyable.

July ranks 2nd sunniest of the year in Chicago, with an average 12 daily sunshine hours. The driest months are February, January, and September. July is the hottest month (27°C avg high); January is the coolest (-1°C). From here, temperatures fall 1°C into August. Compared to last month (June: 24°C high, 12 rain days), July is warmer and drier. July is among the top three sunniest months to visit Chicago.

Year-Round Climate

MonthHighLowRain DaysSunDetails
January-1°C-7°C96hView
February1°C-6°C77hView
March5°C-2°C108hView
April11°C4°C129hView
May18°C11°C1311hView
June24°C18°C1212hView
July27°C21°C1112hView
August26°C20°C1112hView
September22°C16°C910hView
October16°C10°C98hView
November8°C3°C96hView
December2°C-3°C95hView

Other Months in Chicago

JanFebMarAprMayJunJulAugSepOctNovDec

Plan Your Trip to Chicago

Best Time to Visit Chicago

Data Sources for Chicago

Chicago on WikipediaOpen-Meteo Climate APINOAA National CentersUK Met OfficeWMOGeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.