July weather forecastWilmette, IL
July
Weather in July
July in Wilmette, Illinois, is a warm summer month, with an average temperature varying between 76.8°F (24.9°C) and 68°F (20°C).Temperature
July's onset brings a subtle temperature rise, moving from a pleasant 69.6°F (20.9°C) in June to a moderately hot 76.8°F (24.9°C). Wilmette indicates a consistently low-temperature of 68°F (20°C) during the nights of July.Humidity
In Wilmette, Illinois, the average relative humidity in July is 77%.Rainfall
In Wilmette, during July, the rain falls for 17.3 days and regularly aggregates up to 3.7" (94mm) of precipitation. In Wilmette, during the entire year, the rain falls for 154.1 days and collects up to 33.31" (846mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Wilmette, Illinois, the average length of the day in July is 14h and 53min.On the first day of July in Wilmette, sunrise is at 5:19 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:10 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.6h of sunshine.UV index
The months with the highest UV index in Wilmette are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In July, a regular UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Wilmette, IL
- Average high temperature in July: 76.8°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in July: 68°F
The months with the highest average low temperature are July and August (68°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in July
Wilmette, 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
Wilmette, IL
- Average wind speed in July: 8mph
The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in July
Wilmette, IL
- Average humidity in July: 77%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in July
Wilmette, IL
- Average rainfall in July: 3.7"
The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days in July
Wilmette, IL
- Average rainfall days in July: 17.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in July
Wilmette, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Wilmette, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Wilmette, 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 36min).
Average sunshine days in July
Wilmette, IL
- Average sunshine days in July: 10.9 days
The month with the most sunshine days is December (15.3 days).
The months with the least sunshine days are June and July (10.9 days).
Average UV index in July
Wilmette, IL
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Wilmette, 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
Wilmette, 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).
