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When is the best time to visit Chicago?

The best time to visit Chicago is between May and October, the most comfortable stretch of the year on these averages.

Chicago has a real winter and a real summer. Snow is part of the cold months, not a freak event. The outdoor year is short in the middle and long at the ends of summer. Chicago is a city in United States. This page is about Chicago, not a country average.

Most visitors come once the freeze has lifted, or they come on purpose for the cold. Do not book Chicago as a sunlounger destination. The monthly table owns the averages. This layer is the year those numbers sit inside.

Part of United States weather.

Chicago
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Spring

Spring in Chicago is the thaw. March, April and May move from leftover winter to usable outdoor days. Snow retreats. Mud and bright afternoons can share a week.

In Chicago the meteorological summer is June, July and August and winter is December, January and February. Come for cities and the first terraces, not for guaranteed picnic weather. A squall in Chicago in these months is ordinary, not a ruined trip.

Read Chicago in this stretch as its own climate, not as a generic holiday season copied from another destination.

Summer

Summer is the outdoor season in Chicago: June, July and August. Days are long. Heat is relative to the winter you came from, not to a Mediterranean coast. This is walking, terrace and lake weather, not a sunlounger climate.

In Chicago the meteorological summer is June, July and August and winter is December, January and February. Evenings can still want a layer, especially away from the built-up centre. Rain does not disappear just because it is summer. Pack for a useful day that can turn wet.

Autumn

Autumn in Chicago is short and useful: September, October and November. The first weeks are still outdoor days. The last weeks are a coat, wet leaves, and the knowledge that winter is coming.

In Chicago the meteorological summer is June, July and August and winter is December, January and February. Come for cities and landscape, not for a last swim. Light is good. Afternoons end early. A shell in the bag is not optional.

Read Chicago in this stretch as its own climate, not as a generic holiday season copied from another destination.

Winter

Winter in Chicago is the real thing: December, January and February. Cold, short days, and snow that is part of the season rather than a postcard accident. This is a city-and-indoor trip unless you came for the cold on purpose.

In Chicago the meteorological summer is June, July and August and winter is December, January and February. Do not book Chicago as a mild winter-sun destination. Coat, boots, early dark. The monthly table will look grim because the months are grim in the honest way.

Chicago weather by month

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 2 Sept 2026358 places covered

Average temperature and rainfall, month by month

Every figure below is a 1991–2020 climate normal for Chicago, in °C and °F. Open a month for what to expect and what to pack.

Chicago weather by month: average temperature, rainfall and wind for each month, from 1991–2020 climate normals
MonthAverageRainfall
January-3°C / 26°F58 mm
February-1°C / 29°F54 mm
March4°C / 39°F68 mm
April10°C / 50°F105 mm
May16°C / 62°F121 mm
June22°C / 72°F115 mm
July25°C / 76°F102 mm
August24°C / 74°F104 mm
September20°C / 67°F85 mm
October13°C / 55°F98 mm
November6°C / 42°F69 mm
December0°C / 31°F59 mm

Where to stay in Chicago

Dates are a starting point for May.

All hotels in Chicago

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FAQs about Chicago weather

Climate averages for Chicago, 1991–2020.

The best time to visit Chicago is between May and October, the most comfortable stretch of the year on these averages.

July is the hottest month, with an average around 25°C.

May is the wettest month, with about 121 mm of rain.

January is the coolest month, averaging -3°C (26°F) against 25°C (76°F) in July.

This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what each month is usually like, which is what you want when booking ahead. For today or the coming week, check a live forecast.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.