July weather forecastChicago, IL
July
Weather in July
July in Chicago is marked by warm, long days and is one of the city's peak summer months. There is minimal variation in weather conditions from June, making it comfortably predictable for locals and tourists alike. The highest average temperatures of the year, up to 77.5°F (25.3°C), are experienced this month. The minimal rainfall, warm temperatures, and long days contribute to making July an attractive time for outdoor activities. Be it lazing on the beach or enjoying a music festival, July is a vibrant month to be in the city.Temperature
In Chicago, the average high-temperature in July slightly increases from an agreeable 70.5°F (21.4°C) in June to a warm 77.4°F (25.2°C). Throughout July, an average low-temperature of 67.8°F (19.9°C) is expected.Humidity
In Chicago, the average relative humidity in July is 78%.Rainfall
In July, the rain falls for 18.5 days. Throughout July, 4.21" (107mm) of precipitation is accumulated. Throughout the year, there are 160.2 rainfall days, and 36.97" (939mm) of precipitation is accumulated.Snowfall
In Chicago, snow does not fall in June through October.Ocean temperature
In July, the average ocean temperature is 70.7°F (21.5°C).Note: In water of 70.7°F (21.5°C), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in July is 14h and 52min.On the first day of July, sunrise is at 5:19 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:09 pm CDT.
Sunshine
July and August, with an average of 10.6h of sunshine, are months with the most sunshine.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 6 during July translates into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Attention! The combination of sand and water reflections enhances UV ray intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Chicago, IL
- Average high temperature in July: 77.4°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in July: 67.8°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in July
Chicago, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Chicago, IL
- Average wind speed in July: 7.7mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in July
Chicago, IL
- Average humidity in July: 78%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in July
Chicago, IL
- Average rainfall in July: 4.21"
The wettest month (with the highest rainfall) is June (4.88").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in July
Chicago, IL
- Average rainfall days in July: 18.5 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in July
Chicago, IL
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in July
Chicago, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in July
Chicago, IL
- Average sea temperature in July: 70.7°F
The best month for swimming (with the highest average sea temperature) is August (73.9°F).
The coldest month (with the lowest average sea temperature) is February (36.9°F).
Average daylight in July /
Average sunshine in July
Chicago, IL
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Chicago, IL
- Average sunshine days in July: 9.3 days
The month with the most sunshine days is December (15.5 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in July
Chicago, IL
- Average UV index in July: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Chicago, IL
- Average cloud cover in July: 27
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in July
Chicago, IL
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
