June weather forecast
Chatham, IL

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Weather in June

The first month of the summer, June, is a warm month in Chatham, Illinois, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.8°F (18.2°C).

Temperature

June marks a minor ascent in the average high-temperature, adjusting from May's agreeable 72.9°F (22.7°C) to a moderately hot 81.1°F (27.3°C). During June, Chatham experiences an average low-temperature of 64.8°F (18.2°C) at night.

Heat index

June's mean heat index is appraised at a hot 86°F (30°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

In June, the average relative humidity in Chatham is 80%.

Rainfall

The month with the most rainfall is June, when the rain falls for 11.6 days and typically aggregates up to 1.22" (31mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The month with the longest days in Chatham, Illinois, is June, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:32 am and sunset at 8:20 pm. On the last day of June, sunrise is at 5:34 am and sunset at 8:30 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 6 during June translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What is the average June temperature in Chatham?

Chatham in June has an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 64.8°F (18.2°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in June is appraised at 86°F (30°C).

What is the average humidity in June in Chatham?

In Chatham, Illinois, the average relative humidity in June is 80%.

What is the rainiest month in Chatham?

The month with the most rainfall in Chatham is June, when the rain falls for 11.6 days and typically aggregates up to 1.22" (31mm) of precipitation.

How many days does it rain in June in Chatham?

In Chatham, during June, the rain falls for 11.6 days and regularly aggregates up to 1.22" (31mm) of precipitation.

When it does not snow in Chatham?

In Chatham, snow does not fall in May through October.

When are the longest days in Chatham?

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

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

In June, the average day length in Chatham, Illinois, is 14h and 56min.

What time are sunrise and sunset in June in Chatham?

In June, on the first day of the month, sunrise is at 5:32 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:30 pm CDT.

What month has the most sunshine in Chatham?

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

How long on average sun shines in June in Chatham?

In June, the average sunshine duration is 10.4h.

When is the highest UV index in Chatham?

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

What is the UV index intensity in June in Chatham?

In June, the average daily maximum UV index in Chatham is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Chatham, IL

Average temperature in June - Chatham, IL
  • Average high temperature in June: 81.1°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in June: 64.8°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 (21.4°F).

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Average pressure in June
Chatham, IL

Average pressure in June - Chatham, 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).

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Average wind speed in June
Chatham, IL

Average wind speed in June - Chatham, IL
  • Average wind speed in June: 7.3mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity in June
Chatham, IL

Average humidity in June - Chatham, IL
  • Average humidity in June: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in June
Chatham, IL

Average rainfall in June - Chatham, IL
  • Average rainfall in June: 1.22"

The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.43").

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Average rainfall days in June
Chatham, IL

Average rainfall days in June - Chatham, IL
  • Average rainfall days in June: 11.6 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.4 days).

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Average snowfall in June
Chatham, IL

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in June
Chatham, IL

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

The month with the highest number of snowfall days is January (5.7 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
Chatham, IL

Average daylight in June / Average sunshine in June - Chatham, 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 24min).

  • 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 12min).

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Average sunshine days in June
Chatham, IL

Average sunshine days in June - Chatham, IL
  • Average sunshine days in June: 14 days

The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (14 days).

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Average UV index in June
Chatham, IL

Average UV index in June - Chatham, 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
Chatham, IL

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 29).

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Average visibility in June
Chatham, IL

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

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

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Chatham, Illinois, USA

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