July weather forecastGrayslake, IL
July
Weather in July
July, the same as June, is another warm summer month in Grayslake, Illinois, with an average temperature fluctuating between 79.9°F (26.6°C) and 64.4°F (18°C).Temperature
In Grayslake, temperatures reach their average annual highs in July, measuring 79.9°F (26.6°C) and a minimum average of 64.4°F (18°C).Humidity
In Grayslake, the average relative humidity in July is 80%.Rainfall
In Grayslake, in July, it is raining for 17.5 days, with typically 2.48" (63mm) of accumulated precipitation. In Grayslake, Illinois, during the entire year, the rain falls for 142.3 days and collects up to 21.97" (558mm) of precipitation.Snowfall
In Grayslake, snow does not fall in June through September.Daylight
In July, the average length of the day is 14h and 55min.On the first day of July, sunrise is at 5:19 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:12 pm CDT.
Sunshine
The average sunshine in July is 10.1h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Grayslake, 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 (27.5°F).
- Average low temperature in July: 64.4°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in July
Grayslake, IL
- Average pressure in July: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Grayslake, IL
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in July
Grayslake, IL
- Average humidity in July: 80%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in July
Grayslake, IL
- Average rainfall in July: 2.48"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in July
Grayslake, IL
- Average rainfall days in July: 17.5 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in July
Grayslake, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Grayslake, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Grayslake, 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 6min).
- Average sunshine in July: 10h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Grayslake, IL
- Average sunshine days in July: 11.1 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in July
Grayslake, 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
Grayslake, IL
- Average cloud cover in July: 30
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in July
Grayslake, IL
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
