Weather in Chicago 🇺🇸
Monthly weather averages & travel planning
April
Avg Temp
11°C
Rain Days
12 days
Sun Hours
9 hrs
Humidity
65%
North America › 🇺🇸 United States › Chicago
Updated: March 2026
Is April a Good Time to Visit Chicago?
5/10
Fair
April is a fair time to visit Chicago (5/10). With 9 daily sunshine hours and only 12 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Chicago. Culture-focused travellers and those who prefer lighter crowds will find April a practical choice, with prices running lower than peak June without sacrificing all the good weather. May 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 March:5°C avg high
April weather in Chicago is defined by a daily temperature swing from 4°C at night to 11°C during the afternoon. Humidity averages 65%, and you can count on around 9 sunshine hours each day. That combination makes April warm and lush, though dressing in breathable fabrics keeps things manageable.
11°C
52°F
Avg High
4°C
39°F
Avg Low
12 days
104 mm total
Rain Days
9h
per day avg
Sunshine
65%
Moderate
Humidity
Temperature in Chicago in April
The 7°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 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 25 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 52°F average high, 39°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Chicago in April
Morning4°CBefore the day warms up
Afternoon11°CPeak daytime temperature
Evening7°CAfter sunset cools down
Packing for Chicago in April means dressing for 11°C days and 4°C evenings. Layering is key: a thermal base, mid-layer fleece, and a windproof outer jacket for 11°C highs that feel colder in the wind. Evening temperatures settle at 4°C, a modest 7°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 12 potential rainy days.
Local tip: Chicago's 11°C days warm significantly in direct sunshine. A removable outer layer you can tie around your waist handles the midday warmth without leaving you cold on shaded streets or in the evening.
Events in Chicago in April
April 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 April
Based on 11°C average highs and 12 rainy days
- Warm jacket (down or fleece)
- Merino wool base layer (regulates temperature and resists odour)
- Sweaters and lined trousers
- Scarf and lightweight gloves
- Compact folding umbrella
- Waterproof outer layer or packable rain jacket
- Quick-dry clothing that recovers fast after a shower
- 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 April
- Vigorous walking tour of the UNESCO heritage districtMidday (12-2pm)The 11°C peak temperature provides ideal conditions for brisk sightseeing walks
- Cycling the riverside or park circuitAfternoon (1-4pm)Cool dry air makes long cycling sessions comfortable without overheating
- Explore hilltop viewpoints and fortressesMorning for clear viewsCold-weather atmospheric clarity gives the longest sightlines of the year
- Open-air Christmas or seasonal marketsAfternoon into eveningCool temperatures make festive outdoor markets genuinely atmospheric
- 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 morningApril brings distinct seasonal changes to public green spaces worth exploring
- Warm up with traditional hot dishes: local stew, fondue, or braised specialities at a neighbourhood restaurantLunch (12-2pm) or dinner (7-9pm)Cold-weather cuisine is a genuine cultural experience and the best local restaurants serve their heartiest dishes in cooler months
Why is Chicago cool in April?
April marks the transition into warmer conditions in Chicago, as the sun angle climbs and day length extends. Temperatures averaging 11°C by day and 4°C overnight reflect a city shaking off winter: the morning air still carries a cool edge, but afternoons are noticeably warmer than even four weeks prior. At 42 degrees north latitude, spring is one of the most dynamic periods in the annual cycle, with weekly temperature changes that can be larger than the month-to-month shifts of summer. This volatility is part of the appeal: Chicago in April has a freshness and energy that peak-summer heat tends to mute. Layers remain essential, but there are reliable pockets of warmth that reward patience. 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 April
In April, Chicago experiences average highs of 11°C (52°F) and lows of 4°C (39°F). Expect around 12 rainy days and 9 hours of sunshine per day, with humidity averaging 65%. The 7°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an extra jacket is essential for evenings. UV index averages 6, so sun protection is advisable on clear days.
Chicago typically sees 12 rainy days in April, with total precipitation of around 104mm. 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 April.
Pack a warm jacket, sweaters, and layering pieces for Chicago in April. Temperatures can drop to 4°C at night, so thermal underlayers are advisable for evening outings. Waterproof footwear is important with 12 rainy days expected. A scarf, hat, and gloves handle the windchill on clear cold days, which often feel colder than the thermometer reads.
April is a reasonable time to visit Chicago. Expect 12 rainy days, so pack a light rain layer for flexibility. Average temperatures of 11°C make outdoor exploration comfortable during the dry periods. With 9 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Chicago in April is 11°C (52°F), and the average low is 4°C (39°F). The mean daily temperature is approximately 8°C (46°F). The day-to-night range of 7°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.
April is shoulder or low season in Chicago, meaning fewer tourists and generally lower prices than peak months. With 9 sunshine hours and 12 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 April, Chicago suits a range of activities thanks to cool conditions around 11°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 9 hours of sunshine, parks and waterfront walks are particularly enjoyable.
April ranks 6th sunniest of the year in Chicago, with an average 9 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 rise 7°C into May. Compared to last month (March: 5°C high, 10 rain days), April is warmer and wetter. April sits in the middle of the annual sunshine ranking for Chicago, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | -1°C | -7°C | 9 | 6h | View |
| February | 1°C | -6°C | 7 | 7h | View |
| March | 5°C | -2°C | 10 | 8h | View |
| April | 11°C | 4°C | 12 | 9h | View |
| May | 18°C | 11°C | 13 | 11h | View |
| June | 24°C | 18°C | 12 | 12h | View |
| July | 27°C | 21°C | 11 | 12h | View |
| August | 26°C | 20°C | 11 | 12h | View |
| September | 22°C | 16°C | 9 | 10h | View |
| October | 16°C | 10°C | 9 | 8h | View |
| November | 8°C | 3°C | 9 | 6h | View |
| December | 2°C | -3°C | 9 | 5h | View |
January
9 rain days, 6h sun
-1°-7°
February
7 rain days, 7h sun
1°-6°
March
10 rain days, 8h sun
5°-2°
April
12 rain days, 9h sun
11°4°
May
13 rain days, 11h sun
18°11°
June
12 rain days, 12h sun
24°18°
July
11 rain days, 12h sun
27°21°
August
11 rain days, 12h sun
26°20°
September
9 rain days, 10h sun
22°16°
October
9 rain days, 8h sun
16°10°
November
9 rain days, 6h sun
8°3°
December
9 rain days, 5h sun
2°-3°
Other Months in Chicago
Plan Your Trip to Chicago
Data Sources for Chicago
Climate normals represent 30-year averages (1991-2020). Individual years may vary.