July weather forecastVernon Hills, IL
July
Weather in July
July, like June, in Vernon Hills, Illinois, is another warm summer month, with an average temperature ranging between min 64.9°F (18.3°C) and max 80.4°F (26.9°C).Temperature
Vernon Hills records the warmest temperatures in July, averaging a high of 80.4°F (26.9°C) and a low of 64.9°F (18.3°C).Humidity
In July, the average relative humidity is 78%.Rainfall
In July, the rain falls for 17.2 days. Throughout July, 2.91" (74mm) of precipitation is accumulated. In Vernon Hills, during the entire year, the rain falls for 147.3 days and collects up to 27.44" (697mm) of precipitation.Snowfall
In Vernon Hills, Illinois, snow does not fall in June through September.Daylight
In Vernon Hills, the average length of the day in July is 14h and 54min.On the first day of the month, sunrise is at 5:19 am and sunset at 8:32 pm. On the last day of July, sunrise is at 5:44 am and sunset at 8:11 pm CDT.
Sunshine
July and August, with an average of 10.1h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 6 during July translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Vernon Hills, IL
- Average high temperature in July: 80.4°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in July: 64.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in July
Vernon Hills, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Vernon Hills, IL
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in July
Vernon Hills, IL
- Average humidity in July: 78%
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
Vernon Hills, IL
- Average rainfall in July: 2.91"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days in July
Vernon Hills, IL
- Average rainfall days in July: 17.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in July
Vernon Hills, IL
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Vernon Hills, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Vernon Hills, 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 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Vernon Hills, IL
- Average sunshine days in July: 10.9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in July
Vernon Hills, IL
- Average UV index in July: 6
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Vernon Hills, 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 and August (Cloud cover 30).
Average visibility in July
Vernon Hills, 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).
