June weather forecastJohnston City, IL
June
Weather in June
The first month of the summer, June, is still a warm month in Johnston City, Illinois, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 84.6°F (29.2°C).Temperature
June's arrival brings a change in high-temperatures, moving from a moderately hot 75.6°F (24.2°C) in May to a still warm 84.6°F (29.2°C). Throughout June, the temperature in Johnston City tends to fall to a consistent average low of 66.6°F (19.2°C).Heat index
In June, the average heat index is calculated to be a hot 93.2°F (34°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Consider that heat index readings are for situations in the shade and light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
In Johnston City, the average relative humidity in June is 76%.Rainfall
In Johnston City, in June, during 17 rainfall days, 3.74" (95mm) of precipitation is typically accumulated. Throughout the year, in Johnston City, there are 167.2 rainfall days, and 37.68" (957mm) of precipitation is accumulated.Snowfall
In Johnston City, 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 June in Johnston City, sunrise is at 5:34 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:21 pm CDT.
Sunshine
The months with the most sunshine are June and July, with an average of 10.5h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Johnston City. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in June converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Johnston City, IL
- Average high temperature in June: 84.6°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in June: 66.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in June
Johnston City, IL
- Average pressure in June: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in June
Johnston City, IL
- Average wind speed in June: 6.8mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in June
Johnston City, 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 (70%).
Average rainfall in June
Johnston City, IL
- Average rainfall in June: 3.74"
The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in June
Johnston City, IL
- Average rainfall days in June: 17 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in June
Johnston City, IL
- Average snowfall in June: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Johnston City, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (6.1 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
Johnston City, 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 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in June
Johnston City, IL
- Average sunshine days in June: 9.9 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in June
Johnston City, 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 and December (UV index 2).
Average cloud cover in June
Johnston City, IL
- Average cloud cover in June: 28
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in June
Johnston City, 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).
