Chicago Weather in July
United States · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
July in Chicago sees average temperatures ranging from a low of 19.2°C (66.6°F) to a high of 27.1°C (80.8°F), with a mean of 23.1°C (73.6°F). Compared to the annual average of 10.9°C (51.6°F), this month is 12.2°C warmer than the yearly norm. This is the hottest month of the year, reaching 27.1°C (80.8°F) on average. Precipitation averages 172.5mm, making it approximately 79.0mm wetter than the monthly average of 94.0mm. This is the wettest month of the year, with 172.5mm of precipitation and around 17.6 rainy days. The city receives an average of 11.7 hours of sunshine per day during July, with relative humidity averaging 76.4%. Wind speeds reach an average maximum of 21.9 km/h. For travelers, this month offers a hottest month of the year experience in Chicago, with wetter-than-average conditions compared to the rest of the year.
There's something about Chicago in January that reveals the city's true character. I visited during the polar vortex — minus 25°C, Lake Michigan frozen at the edges, and the locals still walked to their neighborhood taverns as if nothing was unusual. The cultural calendar thrives in winter: theaters full, restaurants cozy, museums uncrowded. Summer (June-August) is when Chicago reclaims its lakefront — 25°C, festivals every weekend, the energy electric. I love October: 14°C, the city in autumn colors, and a melancholy knowing winter is coming. Each season reveals a different Chicago.
July vs Adjacent Months
| Metric | June | July | August |
|---|---|---|---|
| Mean Temp | 21.5°C (70.7°F) | 23.1°C (73.6°F) | 22.9°C (73.2°F) |
| Rainfall | 97.6mm | 172.5mm | 103.5mm |
| Sunshine | 11.8 hrs | 11.7 hrs | 11.6 hrs |
| Humidity | 68.8% | 76.4% | 74.9% |
| Wind | 24.6 km/h | 21.9 km/h | 21.8 km/h |
| Rainy Days | 13.6 | 17.6 | 16.8 |
Seasonal Context
July falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Chicago in July, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Chicago in July?
The average temperature in Chicago during July ranges from 19.2°C (66.6°F) to 27.1°C (80.8°F), with a mean of 23.1°C (73.6°F).
How much does it rain in Chicago in July?
Chicago receives an average of 172.5mm of precipitation in July, spread across approximately 17.6 rainy days. This is the wettest month of the year.
What should I pack for Chicago in July?
Based on July weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 172.5mm of precipitation.
Is July a good time to visit Chicago?
July is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Chicago
Cities with Similar July Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.88°, -87.63°. Timezone: America/Chicago. Last updated: 2026-07-30.