June weather forecastCarbondale, IL
June
Weather in June
The Summer season is firmly rooted in Carbondale, Illinois, in June, with temperature fluctuation noticed from 66.4°F (19.1°C) to 84.7°F (29.3°C). This month earmarks the year’s highest recorded sunshine hours of 10.6, making the days abundant in natural light. While rainfall decreases, the humidity moderately lingers. Barring unpleasant gusts, the wind speed remains at a comfortable level. When enjoying the Illinois sunshine, it is advisable to use sun protection due to the higher uv index.Temperature
June in Carbondale signals a shift in the average high-temperature, moving from May's moderately hot 75.7°F (24.3°C) to a still warm 84.7°F (29.3°C). During June, Carbondale's temperature averages to a comfortable 66.4°F (19.1°C) at night.Heat index
The heat index for June is estimated at a very hot 95°F (35°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
In June, the average relative humidity in Carbondale, Illinois, is 76%.Rainfall
In Carbondale, in June, during 16 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Carbondale, during the entire year, the rain falls for 158.6 days and collects up to 34.69" (881mm) of precipitation.Snowfall
In Carbondale, snow does not fall in May through September.Daylight
The month with the longest days is June, with an average of 14h and 42min of daylight.On the first day of the month, sunrise is at 5:36 am and sunset at 8:13 pm. On the last day of June, sunrise is at 5:38 am and sunset at 8:22 pm CDT.
Sunshine
The month with the most sunshine in Carbondale is June, with an average of 10.6h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Carbondale. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during June translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Carbondale, IL
- Average high temperature in June: 84.7°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in June: 66.4°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in June
Carbondale, IL
- Average pressure in June: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in June
Carbondale, IL
- Average wind speed in June: 6.5mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in June
Carbondale, IL
- Average humidity in June: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in June
Carbondale, IL
- Average rainfall in June: 3.43"
The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in June
Carbondale, IL
- Average rainfall days in June: 16 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in June
Carbondale, IL
- Average snowfall in June: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Carbondale, IL
- Average snowfall days in June: 0 days
The months with the highest number of snowfall days are January and February (4.8 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
Carbondale, IL
- Average daylight in June: 14h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in June: 10h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in June
Carbondale, IL
- Average sunshine days in June: 12.2 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in June
Carbondale, IL
- Average UV index in June: 6
The months with the highest UV index are May, 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
Carbondale, IL
- Average cloud cover in June: 27
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in June
Carbondale, 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).





