June weather forecast
Centralia, IL

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Weather in June

The first month of the summer, June, is still a warm month in Centralia, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 83.3°F (28.5°C).

Temperature

As May transitions into June, Centralia notices a gentle rise in the average high-temperature, transitioning from a moderately hot 74.5°F (23.6°C) to a still warm 83.3°F (28.5°C). During June nights, Centralia records an average temperature of 66.4°F (19.1°C).

Heat index

In June, the average heat index is calculated to be a tropical 91.4°F (33°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

The average relative humidity in June in Centralia is 77%.

Rainfall

In Centralia, Illinois, in June, it is raining for 8.1 days, with typically 0.63" (16mm) of accumulated precipitation. In Centralia, Illinois, during the entire year, the rain falls for 83.2 days and collects up to 6.81" (173mm) of precipitation.

Snowfall

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

Daylight

June has the longest days of the year in Centralia, with an average of 14h and 48min of daylight.
On the first day of June, sunrise is at 5:33 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:24 pm CDT.

Sunshine

June and July, with an average of 10.3h of sunshine, are months with the most sunshine in Centralia.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Centralia. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In June, a regular UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Centralia in June?

In Centralia, in June, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 66.4°F (19.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in June is calculated to be 91.4°F (33°C).

What is the average humidity in June in Centralia?

In Centralia, the average relative humidity in June is 77%.

How much does it rain in Centralia in June?

In June, the rain falls for 8.1 days. Throughout June, 0.63" (16mm) of precipitation is accumulated.

When it does not snow in Centralia?

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

When are the longest days in Centralia?

The month with the longest days is June, with an average of 14h and 48min of daylight.

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

The average day length in June in Centralia is 14h and 49min.

What time are sunrise and sunset in June in Centralia?

In June, on the first day of the month, sunrise is at 5:33 am and sunset at 8:15 pm. On the last day of the month, in Centralia, Illinois, sunrise is at 5:35 am and sunset at 8:24 pm CDT.

What are the months with the most sunshine in Centralia?

June and July, with an average of 10.3h of sunshine, are months with the most sunshine.

How long on average sun shines in June in Centralia?

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

When is the highest UV index in Centralia?

May 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 Centralia?

The average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Centralia, IL

Average temperature in June - Centralia, IL
  • Average high temperature in June: 83.3°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.2°F).

  • Average low temperature in June: 66.4°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in June
Centralia, IL

Average pressure in June - Centralia, 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
Centralia, IL

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

The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

Average humidity in June
Centralia, IL

Average humidity in June - Centralia, IL
  • Average humidity in June: 77%

The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Centralia, IL

Average rainfall in June - Centralia, IL
  • Average rainfall in June: 0.63"

The wettest months (with the highest rainfall) are April and July (0.75").
The driest month (with the least rainfall) is September (0.24").

Average rainfall days in June
Centralia, IL

Average rainfall days in June - Centralia, IL
  • Average rainfall days in June: 8.1 days

The month with the highest number of rainy days is May (10.1 days).
The month with the least rainy days is January (3.7 days).

Average snowfall in June
Centralia, IL

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

The month with the highest snowfall is January (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
Centralia, IL

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

The month with the highest number of snowfall days is January (3.8 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
Centralia, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in June: 10h and 2min

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

Average sunshine days in June
Centralia, IL

Average sunshine days in June - Centralia, IL
  • Average sunshine days in June: 17.7 days

The months with the most sunshine days are January and December (24.5 days).
The month with the least sunshine days is May (16.8 days).

Average UV index in June
Centralia, IL

Average UV index in June - Centralia, IL
  • Average UV index in June: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in June
Centralia, IL

Average cloud cover in June - Centralia, IL
  • Average cloud cover in June: 28

The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in June
Centralia, IL

Average visibility in June - Centralia, 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).

Centralia, Illinois, USA

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