June weather forecast
Granite City, IL

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Weather in June

June, the first month of the summer in Granite City, is also a moderately hot month, with an average temperature ranging between max 83.8°F (28.8°C) and min 66.7°F (19.3°C).

Temperature

June's arrival brings a temperature shift, moving from a warm 74.7°F (23.7°C) in May to a still moderately hot 83.8°F (28.8°C). The low-temperature averages to a comfortable 66.7°F (19.3°C) during the nights of June.

Heat index

During June, the heat index is computed to be a tropical 91.4°F (33°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In June, the average relative humidity is 76%.

Rainfall

In Granite City, during June, the rain falls for 16.8 days and regularly aggregates up to 4.09" (104mm) of precipitation. In Granite City, during the entire year, the rain falls for 159.5 days and collects up to 36.06" (916mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 48min of daylight.
On the first day of June, sunrise is at 5:37 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:29 pm CDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 6 in June transforms into the following instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during June?

Granite City in June has an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 66.7°F (19.3°C). In June, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 91.4°F (33°C).

What is the average humidity in June?

In Granite City, the average relative humidity in June is 76%.

How much does it rain in June?

In Granite City, in June, during 16.8 rainfall days, 4.09" (104mm) of precipitation is typically accumulated.

When it does not snow?

In Granite City, snow does not fall in April through October.

When are the longest days?

With an average of 14h and 48min of daylight, June has the longest days of the year in Granite City.

What is the average length of the day in June?

The average day length in June is 14h and 50min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:37 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:29 pm CDT.

What month has the most sunshine in Granite City?

The month with the most sunshine is June, with an average of 10.5h of sunshine.

How long on average sun shines in June?

In June, the average sunshine duration is 10.5h.

What is the month with the highest UV index?

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

What is the UV index reading in June?

In Granite City, the average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Granite City, IL

Average temperature in June - Granite City, IL
  • Average high temperature in June: 83.8°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°F).

  • Average low temperature in June: 66.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in June
Granite City, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in June
Granite City, IL

Average wind speed in June - Granite City, IL
  • Average wind speed in June: 6.5mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in June
Granite City, IL

Average humidity in June - Granite City, IL
  • Average humidity in June: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Granite City, IL

Average rainfall in June - Granite City, IL
  • Average rainfall in June: 4.09"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in June
Granite City, IL

Average rainfall days in June - Granite City, IL
  • Average rainfall days in June: 16.8 days

The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in June
Granite City, IL

Average snowfall in June - Granite City, IL
  • Average snowfall in June: 0"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in June
Granite City, IL

Average snowfall days in June - Granite City, IL
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.3 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
Granite City, IL

Average daylight in June / Average sunshine in June - Granite City, 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 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 36min).

Average sunshine days in June
Granite City, IL

Average sunshine days in June - Granite City, IL
  • Average sunshine days in June: 10.1 days

The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in June
Granite City, IL

Average UV index in June - Granite City, 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, February, November and December (UV index 2).

Average cloud cover in June
Granite City, IL

Average cloud cover in June - Granite City, IL
  • Average cloud cover in June: 28

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in June
Granite City, IL

Average visibility in June - Granite City, 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).

Granite City, Illinois, USA

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