June weather forecast
Clayton, IL

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Weather in June

The first month of the summer, June, is a warm month in Clayton, Illinois, with an average temperature varying between 81°F (27.2°C) and 64°F (17.8°C).

Temperature

June marks a rise in the average high-temperature, moving from May's agreeable 72°F (22.2°C) to a warm 81°F (27.2°C). Clayton, in June, experiences an average temperature of 64°F (17.8°C) at night.

Heat index

Throughout June, the heat index is calculated to be a hot 86°F (30°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

In June, the average relative humidity is 81%.

Rainfall

In June, the rain falls for 15 days. Throughout June, 2.48" (63mm) of precipitation is accumulated. In Clayton, during the entire year, the rain falls for 132 days and collects up to 22.17" (563mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

June has the longest days of the year, with an average of 15h and 0min of daylight.
On the first day of June, sunrise is at 5:36 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:36 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10.2h of sunshine.

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 hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In June, a daily UV index of 6 turns into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in June?

The average high-temperature, in June, in Clayton, is 81°F (27.2°C), while the average low-temperature is 64°F (17.8°C). In June, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in June?

In June, the average relative humidity is 81%.

How much does it rain in June?

In Clayton, in June, it is raining for 15 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 0min of daylight.

How many hours of daylight does Clayton have in June?

The average day length in June is 14h and 58min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:36 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:36 pm CDT.

What are the months with the most sunshine?

The months with the most sunshine are June and July, with an average of 10.2h of sunshine.

How long on average sun shines in June?

In Clayton, the average sunshine duration in June is 10.2h.

What is the month with the highest UV index in Clayton?

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

What is the UV index intensity in June?

The average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Clayton, IL

Average temperature in June - Clayton, IL
  • Average high temperature in June: 81°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 (32.7°F).

  • Average low temperature in June: 64°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in June
Clayton, IL

Average pressure in June - Clayton, IL
  • Average pressure in June: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in June
Clayton, IL

Average wind speed in June - Clayton, IL
  • Average wind speed in June: 7.4mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

Average humidity in June
Clayton, IL

Average humidity in June - Clayton, IL
  • Average humidity in June: 81%

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

Average rainfall in June
Clayton, IL

Average rainfall in June - Clayton, IL
  • Average rainfall in June: 2.48"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in June
Clayton, IL

Average rainfall days in June - Clayton, IL
  • Average rainfall days in June: 15 days

The month with the highest number of rainy days is May (16.9 days).
The months with the least rainy days are January and February (5.3 days).

Average snowfall in June
Clayton, IL

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

The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
Clayton, IL

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

The month with the highest number of snowfall days is January (7.8 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
Clayton, IL

Average daylight in June / Average sunshine in June - Clayton, IL
  • Average daylight in June: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in June: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in June
Clayton, IL

Average sunshine days in June - Clayton, IL
  • Average sunshine days in June: 12.2 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in June
Clayton, IL

Average UV index in June - Clayton, 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
Clayton, IL

Average cloud cover in June - Clayton, IL
  • Average cloud cover in June: 31

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).

Average visibility in June
Clayton, IL

Average visibility in June - Clayton, 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).

Clayton, Illinois, USA

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