June weather forecastNaperville, IL
June
Weather in June
June is the first month of summer, and the weather in Naperville shifts from mild to warm. With temperatures soaring to an average high of 78.4°F (25.8°C) and dipping to an average low of 61.3°F (16.3°C), summer is truly underway. The city fills with lively outdoor activities, taking advantage of the warm days and gentle evening breezes.Temperature
Naperville in June sees a temperature change, with average high-temperatures moving from a pleasant 69.1°F (20.6°C) in May to a warm 78.4°F (25.8°C). The nights of June anticipate an average low-temperature of 61.3°F (16.3°C).Humidity
In June, the average relative humidity is 78%.Rainfall
In Naperville, in June, it is raining for 15.3 days, with typically 1.85" (47mm) of accumulated precipitation. In Naperville, during the entire year, the rain falls for 132.2 days and collects up to 16.22" (412mm) of precipitation.Snowfall
In Naperville, Illinois, snow does not fall in May through September.Daylight
June has the longest days of the year, with an average of 15h and 12min of daylight.On the first day of June, sunrise is at 5:19 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:31 pm CDT.
Sunshine
In Naperville, the average sunshine in June is 9.7h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 during June translates into the following guidance:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Naperville, IL
- Average high temperature in June: 78.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in June: 61.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in June
Naperville, IL
- Average pressure in June: 29.92"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 June
Naperville, IL
- Average wind speed in June: 7.1mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in June
Naperville, IL
- Average humidity in June: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in June
Naperville, IL
- Average rainfall in June: 1.85"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in June
Naperville, IL
- Average rainfall days in June: 15.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in June
Naperville, IL
- Average snowfall in June: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Naperville, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Naperville, IL
- Average daylight in June: 15h and 12min
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 June: 9h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in June
Naperville, IL
- Average sunshine days in June: 12.2 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in June
Naperville, IL
- Average UV index in June: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in June
Naperville, IL
- Average cloud cover in June: 35
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in June
Naperville, IL
- Average visibility in June: 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).
