Temperatures typically reach 100 °F in Chicago just once a year. But it does get into the 90s on an average 21 days a year. The days are above 50 degrees from May to September and nearly every day October. But Chicago only gets that warm for a few days in winter. Freezing Temperatures in Chicago
The hottest month of the year in Chicago is July, with an average high of 82°F and low of 70°F. The cold season lasts for 3.2 months, from December 2 to March 9, with an average daily high temperature below 43°F. The coldest month of the year in Chicago is January, with an average low of 22°F and high of 33°F.
The warmest month of the year is July, with an average temperature of 23.8 °C | 74.8 °F. At -3.8 °C | 25.2 °F on average, January is the coldest month of the year. Weather by month // weather averages Chicago
In January, the coldest month of the year, the weather in Chicago is usually very cold. The average temperature is of -3.0 °C (27 °F), with a minimum of -6.7 °C (19.9 °F) and a maximum of 0.7 °C (33.2 °F). On the coldest nights of the month, the temperature usually drops to around -19 °C (-2.5 °F).
July is the hottest month in Chicago with an average temperature of 23°C (73°F) and the coldest is January at -6°C (21°F) with the most daily sunshine hours at 12 in July. The wettest month is July with an average of 100mm of rain .. Average Temperature: Chicago
The most pleasant months of the year for Chicago are June, September and August. In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois. January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.