June weather forecast
Chesterfield, IL

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Weather in June

June, the first month of the summer in Chesterfield, is also a moderately hot month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 81.9°F (27.7°C).

Temperature

Observing a slight rise in June, the average high-temperature shifts from May's warm 73.6°F (23.1°C) to a still moderately hot 81.9°F (27.7°C). Chesterfield's temperature tends to fall to an average low of 65.1°F (18.4°C) during the nights of June.

Heat index

For most parts of June, the heat index is calculated to be a tropical 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital 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 Chesterfield, the average relative humidity in June is 79%.

Rainfall

June is the month with the most rainfall. Rain falls for 15.4 days and accumulates 3.07" (78mm) of precipitation.

Snowfall

In Chesterfield, snow does not fall in April through October.

Daylight

The month with the longest days in Chesterfield is June, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:21 pm. On the last day of June, sunrise is at 5:37 am and sunset at 8:30 pm CDT.

Sunshine

June has the most sunshine of the year in Chesterfield, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index in Chesterfield, Illinois, are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during June translates into these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What are June temperatures in Chesterfield?

An average high-temperature, in June, in Chesterfield, is 81.9°F (27.7°C) and the average low-temperature is 65.1°F (18.4°C). In June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in June in Chesterfield?

In Chesterfield, the average relative humidity in June is 79%.

What is the rainiest month in Chesterfield?

The month with the most rainfall in Chesterfield is June, when the rain falls for 15.4 days and typically aggregates up to 3.07" (78mm) of precipitation.

How much does it rain in Chesterfield in June?

In Chesterfield, Illinois, in June, during 15.4 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

When it does not snow in Chesterfield?

In Chesterfield, snow does not fall in April through October.

When are the longest days in Chesterfield?

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 Chesterfield?

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

What time are sunrise and sunset in June in Chesterfield?

In June, on the first day of the month, sunrise is at 5:35 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:30 pm CDT.

What month has the most sunshine in Chesterfield?

With an average of 10.3h of sunshine, June has the most sunshine of the year in Chesterfield.

How long on average sun shines in June in Chesterfield?

In Chesterfield, the average sunshine duration in June is 10.3h.

When is the highest UV index in Chesterfield?

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

What is the UV index intensity in June in Chesterfield?

In June, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to 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
Chesterfield, IL

Average temperature in June - Chesterfield, 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 (34.9°F).

  • Average low temperature in June: 65.1°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in June
Chesterfield, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in June
Chesterfield, IL

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

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity in June
Chesterfield, IL

Average humidity in June - Chesterfield, 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%).

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Average rainfall in June
Chesterfield, IL

Average rainfall in June - Chesterfield, IL
  • Average rainfall in June: 3.07"

The wettest month (with the highest rainfall) is June (3.07").
The driest months (with the least rainfall) are January and February (1.22").

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Average rainfall days in June
Chesterfield, IL

Average rainfall days in June - Chesterfield, IL
  • Average rainfall days in June: 15.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in June
Chesterfield, IL

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

The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in June
Chesterfield, IL

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

The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in June / Average sunshine in June - Chesterfield, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in June
Chesterfield, IL

Average sunshine days in June - Chesterfield, IL
  • Average sunshine days in June: 12.1 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in June
Chesterfield, IL

Average UV index in June - Chesterfield, 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).

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Average cloud cover in June
Chesterfield, IL

Average cloud cover in June - Chesterfield, IL
  • Average cloud cover in June: 30

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

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Average visibility in June
Chesterfield, IL

Average visibility in June - Chesterfield, 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).

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Chesterfield, Illinois, USA

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