June weather forecastStonington, IL
June
Weather in June
The first month of the summer, June, is a warm month in Stonington, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 64.8°F (18.2°C).Temperature
In June, the average high-temperature marginally rises from a pleasant 72.9°F (22.7°C) in May to a moderately hot 81.1°F (27.3°C). Stonington records a mean low-temperature of 64.8°F (18.2°C) in June.Heat index
The average heat index in June is calculated to be a hot 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In June, the average relative humidity is 79%.Rainfall
In Stonington, in June, during 16.5 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Stonington, during the entire year, the rain falls for 147.7 days and collects up to 29.65" (753mm) of precipitation.Snowfall
May through October are months without snowfall in Stonington.Daylight
June has the longest days of the year in Stonington, with an average of 14h and 54min of daylight.On the first day of the month, sunrise is at 5:30 am and sunset at 8:18 pm. On the last day of June, in Stonington, sunrise is at 5:32 am and sunset at 8:28 pm CDT.
Sunshine
June has the most sunshine of the year, with an average of 10.3h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. 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: In June, a regular UV index of 6 translates into these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Stonington, IL
- Average high temperature in June: 81.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in June: 64.8°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in June
Stonington, IL
- Average pressure in June: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in June
Stonington, IL
- Average wind speed in June: 7.3mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in June
Stonington, IL
- Average humidity in June: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in June
Stonington, IL
- Average rainfall in June: 3.35"
The wettest month (with the highest rainfall) is April (3.58").
The driest months (with the least rainfall) are February and December (1.65").
Average rainfall days in June
Stonington, IL
- Average rainfall days in June: 16.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in June
Stonington, IL
- Average snowfall in June: 0"
The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in June
Stonington, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Stonington, IL
- Average daylight in June: 14h and 54min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in June: 10h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in June
Stonington, IL
- Average sunshine days in June: 11 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (11 days).
Average UV index in June
Stonington, 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, February, November and December (UV index 2).
Average cloud cover in June
Stonington, IL
- Average cloud cover in June: 30
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility in June
Stonington, IL
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
