June weather forecast
Anna, IL

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Weather in June

June, the first month of the summer in Anna, is also a moderately hot month, with an average temperature varying between 85.6°F (29.8°C) and 66.2°F (19°C).

Temperature

Anna sees an increase in the average high-temperature with the arrival of June, moving from May's 75.7°F (24.3°C) to a still moderately hot 85.6°F (29.8°C). In Anna, an average low-temperature of 66.2°F (19°C) is recorded during June nights.

Heat index

Throughout June, the heat index is computed to be a torrid 96.8°F (36°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In June, the average relative humidity is 76%.

Rainfall

In Anna, Illinois, in June, during 14.6 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Anna, during the entire year, the rain falls for 143 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

In Anna, snow does not fall in May through September.

Daylight

With an average of 14h and 42min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:12 pm. On the last day of June, sunrise is at 5:39 am and sunset at 8:22 pm CDT.

Sunshine

In June, the average sunshine in Anna is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in June translates into these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in June?

In Anna, 85.6°F (29.8°C) is the average high-temperature and 66.2°F (19°C) is the average low-temperature during June. In June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 96.8°F (36°C).

What is the average humidity in June?

In June, the average relative humidity is 76%.

How many days does it rain in June?

In Anna, during June, the rain falls for 14.6 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When it does not snow?

In Anna, snow does not fall in May through September.

When are the longest days?

June has the longest days of the year, with an average of 14h and 42min of daylight.

What is the average length of the day in June?

In Anna, Illinois, the average day length in June is 14h and 43min.

When is the sunrise / sunset in June?

On the first day of June in Anna, sunrise is at 5:37 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:22 pm CDT.

How long on average sun shines in June?

The average sunshine duration in June is 10.3h.

What are the months with the highest UV index?

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?

The average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Anna, IL

Average temperature in June - Anna, IL
  • Average high temperature in June: 85.6°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in June: 66.2°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in June
Anna, IL

Average pressure in June - Anna, IL
  • Average pressure in June: 29.94"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in June
Anna, IL

Average wind speed in June - Anna, IL
  • Average wind speed in June: 6.3mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in June
Anna, IL

Average humidity in June - Anna, IL
  • Average humidity in June: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in June
Anna, IL

Average rainfall in June - Anna, IL
  • Average rainfall in June: 2.87"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in June
Anna, IL

Average rainfall days in June - Anna, IL
  • Average rainfall days in June: 14.6 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in June
Anna, IL

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

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in June
Anna, IL

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

The month with the highest number of snowfall days is January (4.6 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
Anna, IL

Average daylight in June / Average sunshine in June - Anna, IL
  • Average daylight in June: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in June: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in June
Anna, IL

Average sunshine days in June - Anna, IL
  • Average sunshine days in June: 13 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in June
Anna, IL

Average UV index in June - Anna, 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 and December (UV index 2).

Average cloud cover in June
Anna, IL

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

Average visibility in June
Anna, IL

Average visibility in June - Anna, 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).

Anna, Illinois, USA

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