June weather forecastShannon, IL
June
Weather in June
The first month of the summer, June, is a moderately hot month in Shannon, Illinois, with an average temperature ranging between min 60.4°F (15.8°C) and max 77.2°F (25.1°C).Temperature
As May transitions into June, Shannon notices a gentle rise in the average high-temperature, transitioning from a pleasant 68.5°F (20.3°C) to a moderately hot 77.2°F (25.1°C). In June, Shannon reports a consistent average low-temperature of 60.4°F (15.8°C) during the nights.Humidity
In June, the average relative humidity in Shannon is 83%.Rainfall
In Shannon, during June, the rain falls for 16.4 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Shannon, during the entire year, the rain falls for 130.8 days and collects up to 17.95" (456mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
June has the longest days of the year in Shannon, with an average of 15h and 12min of daylight.On the first day of the month, sunrise is at 5:24 am and sunset at 8:28 pm. On the last day of June, sunrise is at 5:26 am and sunset at 8:39 pm CDT.
Sunshine
In June, the average sunshine is 9.5h.UV index
In Shannon, the average daily maximum UV index in June is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In June, the maximum UV index of 5 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Shannon, IL
- Average high temperature in June: 77.2°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 (25.9°F).
- Average low temperature in June: 60.4°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in June
Shannon, IL
- Average pressure in June: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in June
Shannon, IL
- Average wind speed in June: 7.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in June
Shannon, IL
- Average humidity in June: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in June
Shannon, IL
- Average rainfall in June: 2.48"
The wettest month (with the highest rainfall) is May (2.76").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in June
Shannon, IL
- Average rainfall days in June: 16.4 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in June
Shannon, IL
- Average snowfall in June: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Shannon, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (11.2 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
Shannon, 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 30min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in June
Shannon, IL
- Average sunshine days in June: 10 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10 days).
Average UV index in June
Shannon, IL
- Average UV index in June: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in June
Shannon, IL
- Average cloud cover in June: 36
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in June
Shannon, IL
- Average visibility in June: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
