June weather forecast
Hillsboro, IL

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Weather in June

June, the first month of the summer in Hillsboro, is still a warm month, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 81.9°F (27.7°C).

Temperature

June witnesses a minor rise in the average high-temperature, transitioning from a moderately hot 73.6°F (23.1°C) in May to a still warm 81.9°F (27.7°C). Hillsboro witnesses a consistent average low-temperature of 65.5°F (18.6°C) throughout June.

Heat index

For most parts of June, the heat index is computed to be a tropical 87.8°F (31°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

The average relative humidity in June in Hillsboro is 79%.

Rainfall

June is the month with the most rainfall. Rain falls for 14.6 days and accumulates 3.35" (85mm) of precipitation.

Snowfall

April through October are months without snowfall in Hillsboro.

Daylight

With an average of 14h and 54min of daylight, June has the longest days of the year in Hillsboro, Illinois.
On the first day of June, sunrise is at 5:33 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:28 pm CDT.

Sunshine

With an average of 10.4h of sunshine, June has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during June, leads to the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are June temperatures in Hillsboro?

During June, Hillsboro experiences an average high-temperature of 81.9°F (27.7°C) and a low-temperature of 65.5°F (18.6°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in June is computed to be 87.8°F (31°C).

What is the average humidity in June in Hillsboro?

The average relative humidity in June is 79%.

What is the rainiest month in Hillsboro?

The month with the most rainfall in Hillsboro is June, when the rain falls for 14.6 days and typically aggregates up to 3.35" (85mm) of precipitation.

How much does it rain in Hillsboro in June?

In Hillsboro, Illinois, during June, the rain falls for 14.6 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in Hillsboro?

April through October are months without snowfall in Hillsboro.

When are the longest days in Hillsboro?

With an average of 14h and 54min of daylight, June has the longest days of the year.

What is the average length of the day in June in Hillsboro?

The average day length in June in Hillsboro, Illinois, is 14h and 53min.

When are sunrise and sunset in June in Hillsboro?

On the first day of June in Hillsboro, Illinois, sunrise is at 5:33 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:28 pm CDT.

What month has the most sunshine in Hillsboro?

June has the most sunshine of the year in Hillsboro, Illinois, with an average of 10.4h of sunshine.

How long on average sun shines in June in Hillsboro?

In June, the average sunshine duration in Hillsboro, Illinois, is 10.4h.

What are the months with the highest UV index in Hillsboro?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in June in Hillsboro?

The average daily maximum UV index in June in Hillsboro is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Hillsboro, IL

Average temperature in June - Hillsboro, IL
  • Average high temperature in June: 81.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in June: 65.5°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in June
Hillsboro, IL

Average pressure in June - Hillsboro, IL
  • Average pressure in June: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in June
Hillsboro, IL

Average wind speed in June - Hillsboro, IL
  • Average wind speed in June: 7mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in June
Hillsboro, IL

Average humidity in June - Hillsboro, IL
  • Average humidity in June: 79%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Hillsboro, IL

Average rainfall in June - Hillsboro, IL
  • Average rainfall in June: 3.35"

The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").

Average rainfall days in June
Hillsboro, IL

Average rainfall days in June - Hillsboro, IL
  • Average rainfall days in June: 14.6 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).

Average snowfall in June
Hillsboro, IL

Average snowfall in June - Hillsboro, IL
  • Average snowfall in June: 0"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
Hillsboro, IL

Average snowfall days in June - Hillsboro, IL
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.2 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
Hillsboro, IL

Average daylight in June / Average sunshine in June - Hillsboro, IL
  • Average daylight in June: 14h and 5min

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 30min).

  • Average sunshine in June: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in June
Hillsboro, IL

Average sunshine days in June - Hillsboro, IL
  • Average sunshine days in June: 12.3 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in June
Hillsboro, IL

Average UV index in June - Hillsboro, 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
Hillsboro, IL

Average cloud cover in June - Hillsboro, IL
  • Average cloud cover in June: 29

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).

Average visibility in June
Hillsboro, IL

Average visibility in June - Hillsboro, IL
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

Hillsboro, Illinois, USA

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