June weather forecast
Harrisburg, IL

June marks the commencement of the Summer season in Harrisburg, Illinois. Temperatures maintain within the limits of 66.2°F (19°C) to 84.7°F (29.3°C), giving inhabitants a taste of intense warmth. Typically characterized by sunny days and balmy nights, June provides an ideal setting for numerous outdoor activities, including barbecuing and poolside lounging. Towards the end of the month, the heat intensifies, befitting the peak Summer months of July and August around the corner.

Temperature

June brings an increase in the average high-temperature, progressing from a warm 75.6°F (24.2°C) in May to a still moderately hot 84.7°F (29.3°C). Harrisburg in June experiences a low-temperature average of 66.2°F (19°C).

Heat index

The heat index for June is evaluated at a sweltering 95°F (35°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Harrisburg, the average relative humidity in June is 76%.

Rainfall

In June, in Harrisburg, Illinois, the rain falls for 15.6 days. Throughout June, 3.46" (88mm) of precipitation is accumulated. In Harrisburg, during the entire year, the rain falls for 158.6 days and collects up to 36.02" (915mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

June has the longest days of the year in Harrisburg, with an average of 14h and 42min of daylight.
On the first day of the month, sunrise is at 5:33 am and sunset at 8:10 pm. On the last day of June, in Harrisburg, Illinois, sunrise is at 5:35 am and sunset at 8:20 pm CDT.

Sunshine

With an average of 10.6h of sunshine, June has the most sunshine of the year in Harrisburg.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Harrisburg. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In June, the average maximum UV index of 6 translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.