June weather forecast
Mason, IL

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Weather in June

The first month of the summer, June, is still a warm month in Mason, Illinois, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 81.7°F (27.6°C).

Temperature

Entering June, Mason notices a subtle temperature elevation, with the average high-temperature advancing from May's 73.6°F (23.1°C) to a still moderately hot 81.7°F (27.6°C). The nighttime temperature dips to an enjoyable 65.5°F (18.6°C) on average during June.

Heat index

The heat index value for June is computed to be a tropical 87.8°F (31°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

In June, the average relative humidity in Mason is 78%.

Rainfall

In Mason, Illinois, in June, it is raining for 14.5 days, with typically 3.11" (79mm) of accumulated precipitation. In Mason, during the entire year, the rain falls for 141.3 days and collects up to 26.77" (680mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The month with the longest days in Mason is June, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:30 am and sunset at 8:14 pm. On the last day of June, in Mason, sunrise is at 5:32 am and sunset at 8:24 pm CDT.

Sunshine

With an average of 10.5h of sunshine, June has the most sunshine of the year in Mason.

UV index

The months with the highest UV index in Mason, Illinois, are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during June translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Mason in June?

The high-temperature, in June, in Mason, is 81.7°F (27.6°C), while the low-temperature averages to 65.5°F (18.6°C). In June, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in June in Mason?

The average relative humidity in June is 78%.

How much does it rain in Mason in June?

In Mason, Illinois, in June, it is raining for 14.5 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Mason?

April through October are months without snowfall in Mason.

When are the longest days in Mason?

The month with the longest days is June, with an average of 14h and 54min of daylight.

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

The average day length in June in Mason, Illinois, is 14h and 52min.

What time are sunrise and sunset in June in Mason?

In June, on the first day of the month, sunrise is at 5:30 am and sunset at 8:14 pm. On the last day of the month, in Mason, Illinois, sunrise is at 5:32 am and sunset at 8:24 pm CDT.

What month has the most sunshine in Mason?

June has the most sunshine of the year, with an average of 10.5h of sunshine.

How many hours of sunshine does Mason have in June?

In June, the average sunshine duration is 10.5h.

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

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

How high is the UV index in June in Mason?

In Mason, Illinois, the average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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
Mason, IL

Average temperature in June - Mason, IL
  • Average high temperature in June: 81.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.6°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 (23.4°F).

Average pressure in June
Mason, IL

Average pressure in June - Mason, 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
Mason, IL

Average wind speed in June - Mason, IL
  • Average wind speed in June: 7.1mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in June
Mason, IL

Average humidity in June - Mason, IL
  • Average humidity in June: 78%

The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Mason, IL

Average rainfall in June - Mason, IL
  • Average rainfall in June: 3.11"

The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is February (1.38").

Average rainfall days in June
Mason, IL

Average rainfall days in June - Mason, IL
  • Average rainfall days in June: 14.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in June
Mason, IL

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

The month with the highest snowfall is January (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
Mason, IL

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

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in June /
Average sunshine in June
Mason, IL

Average daylight in June / Average sunshine in June - Mason, 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in June
Mason, IL

Average sunshine days in June - Mason, IL
  • Average sunshine days in June: 12.4 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in June
Mason, IL

Average UV index in June - Mason, 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
Mason, IL

Average cloud cover in June - Mason, 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
Mason, IL

Average visibility in June - Mason, 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).

Mason, Illinois, USA

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