July weather forecastCary, IL
July
Weather in July
July, the same as June, is another warm summer month in Cary, Illinois, with an average temperature varying between 79.9°F (26.6°C) and 63.5°F (17.5°C).Temperature
July is the warmest month, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 63.5°F (17.5°C).Humidity
The average relative humidity in July is 82%.Rainfall
In July, the rain falls for 18.8 days. Throughout July, 2.52" (64mm) of precipitation is accumulated. In Cary, during the entire year, the rain falls for 151.2 days and collects up to 24.17" (614mm) of precipitation.Snowfall
In Cary, snow does not fall in June through September.Daylight
In July, the average length of the day is 14h and 54min.On the first day of July, sunrise is at 5:20 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:12 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 10h of sunshine.UV index
The average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 5 during July leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Cary, IL
- Average high temperature in July: 79.9°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in July: 63.5°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in July
Cary, 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
Cary, IL
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in July
Cary, IL
- Average humidity in July: 82%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in July
Cary, IL
- Average rainfall in July: 2.52"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in July
Cary, IL
- Average rainfall days in July: 18.8 days
The month with the highest number of rainy days is July (18.8 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in July
Cary, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Cary, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Cary, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in July
Cary, IL
- Average sunshine days in July: 10.4 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (10 days).
Average UV index in July
Cary, IL
- Average UV index in July: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Cary, IL
- Average cloud cover in July: 32
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in July
Cary, IL
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).





