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Best time to visit Chicago, IL, USA

Our verdict

The best time to visit Chicago is September-November

Based on all the essential things any traveller needs to know about visiting Chicago such as the cost of travel, weather, peak travel seasons and many more, September-November is the best time of year to go.

In summer, the average maximum temperature is around 25℃ (77℉), but temperatures can sometimes reach as high as 27℃ (81℉) on the hottest days of the year. The weather at night in the winter, which is around January-time, can get down to a minimum of -11℃ (12℉).

If you’re keen to see the sights of Chicago during the day, the sun stays up the longest around July. On average it rains the most days in June, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.

Learn everything you need to know (and none of the stuff you don’t) about when to go to Chicago below. Be sure to check out the handy tools we’ve included to help you search for flights and transport, accommodation, and everything else you need to plan and book your trip.

Warmest month

July

Least rainfall

December

Most daylight

July

Let someone else do the hard work.
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Where to?
Chicago

Chicago seasons

Before you continue, it’s important to know when the seasons are in Chicago as they might be different to yours depending on where in the world you’re travelling from. Chicago is in the Northern Hemisphere, so the seasons fall during these months:

Season Months
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Chicago

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Chicago for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Chicago climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Chicago for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Chicago in January

  • Average temperature: -4℃ (25℉)
  • Average high temperature: -1℃ (30℉)
  • Average low temperature: -6℃ (21℉)
  • Average humidity: 82%
  • Average sunny days: 14 days
  • Average rainfall: 45mm (2") over 7 days
  • Average snow days: 11 days
14 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Chicago in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Chicago in February

  • Average temperature: -2℃ (28℉)
  • Average high temperature: 0℃ (32℉)
  • Average low temperature: -5℃ (23℉)
  • Average humidity: 81%
  • Average sunny days: 12 days
  • Average rainfall: 46mm (2") over 6 days
  • Average snow days: 10 days
12 days
of pure sunshine
6 days
of showers or rain

What to pack: If you’re heading to Chicago in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Chicago in March

  • Average temperature: 3℃ (37℉)
  • Average high temperature: 5℃ (42℉)
  • Average low temperature: 0℃ (32℉)
  • Average humidity: 77%
  • Average sunny days: 14 days
  • Average rainfall: 54mm (2") over 12 days
  • Average snow days: 6 days
14 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Chicago in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Chicago in April

  • Average temperature: 8℃ (46℉)
  • Average high temperature: 10℃ (51℉)
  • Average low temperature: 5℃ (40℉)
  • Average humidity: 77%
  • Average sunny days: 11 days
  • Average rainfall: 94mm (4") over 17 days
  • Average snow days: 2 days
11 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Chicago in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Chicago in May

  • Average temperature: 13℃ (56℉)
  • Average high temperature: 16℃ (61℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 79%
  • Average sunny days: 11 days
  • Average rainfall: 117mm (5") over 18 days
11 days
of pure sunshine
18 days
of showers or rain

What to pack: If you’re heading to Chicago in May, make sure you pack a warm jacket or coat.


Chicago in June

  • Average temperature: 18℃ (65℉)
  • Average high temperature: 21℃ (70℉)
  • Average low temperature: 15℃ (60℉)
  • Average humidity: 81%
  • Average sunny days: 10 days
  • Average rainfall: 122mm (5") over 17 days
10 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Chicago in June, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Chicago in July

  • Average temperature: 22℃ (72℉)
  • Average high temperature: 25℃ (77℉)
  • Average low temperature: 20℃ (67℉)
  • Average humidity: 79%
  • Average sunny days: 9 days
  • Average rainfall: 101mm (4") over 18 days
9 days
of pure sunshine
18 days
of showers or rain

What to pack: If you’re heading to Chicago in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Chicago in August

  • Average temperature: 22℃ (72℉)
  • Average high temperature: 25℃ (77℉)
  • Average low temperature: 20℃ (67℉)
  • Average humidity: 77%
  • Average sunny days: 10 days
  • Average rainfall: 103mm (4") over 17 days
10 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Chicago in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Chicago in September

  • Average temperature: 19℃ (66℉)
  • Average high temperature: 22℃ (71℉)
  • Average low temperature: 16℃ (61℉)
  • Average humidity: 75%
  • Average sunny days: 12 days
  • Average rainfall: 82mm (3") over 15 days
12 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Chicago in September, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.

Chicago in October

  • Average temperature: 12℃ (54℉)
  • Average high temperature: 15℃ (59℉)
  • Average low temperature: 10℃ (49℉)
  • Average humidity: 73%
  • Average sunny days: 14 days
  • Average rainfall: 79mm (3") over 14 days
14 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Chicago in October, make sure you pack a warm jacket or coat.


Chicago in November

  • Average temperature: 5℃ (42℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 3℃ (37℉)
  • Average humidity: 74%
  • Average sunny days: 15 days
  • Average rainfall: 46mm (2") over 11 days
  • Average snow days: 4 days
15 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Chicago in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Chicago in December

  • Average temperature: 0℃ (32℉)
  • Average high temperature: 2℃ (36℉)
  • Average low temperature: -2℃ (28℉)
  • Average humidity: 80%
  • Average sunny days: 15 days
  • Average rainfall: 42mm (2") over 9 days
  • Average snow days: 8 days
15 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Chicago in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Top FAQs

The hottest month of the year in Chicago is usually July, where temperatures tend to rise to around 25℃ (77℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Chicago is generally around December. The dry season often coincides with cooler weather, so you should check the temperatures in December first to make sure it’s still a good time to go.
The rainiest time of year in Chicago is generally around June, although the wetter season can sometimes extend a few months either side of June too.
If you want to get the most out of your time visiting Chicago, or if you're just afraid of the dark, the days in July are usually the longest between sunrise and sunset.

Chicago map

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