June weather forecast
DeKalb, IL

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Weather in June

DeKalb, Illinois, takes on a summery disposition in June. The month is characterized by the highest UV index of 6, matched with an upswing in temperature and humidity. June also brings about the longest daylight hours of the year, extending outdoor activities till late evening. Despite the increased precipitation, clear sunny days dominate, with rainfall often leaving behind a pleasant, damp earthy fragrance. June's weather marks the beginning of the sultry summer days, filled with vibrant colors, laughter, and an infectious joy.

Temperature

June's arrival is marked by an increase in the average high-temperature, moving from an agreeable 68.7°F (20.4°C) in May to a moderately hot 77.7°F (25.4°C). DeKalb records a steady low-temperature average of 60.1°F (15.6°C) during June.

Humidity

In June, the average relative humidity is 81%.

Rainfall

In DeKalb, in June, during 18.1 rainfall days, 4.13" (105mm) of precipitation is typically accumulated. In DeKalb, during the entire year, the rain falls for 152.6 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

In DeKalb, snow does not fall in June through September.

Daylight

With an average of 15h and 12min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:21 am and sunset at 8:24 pm. On the last day of June, in DeKalb, sunrise is at 5:23 am and sunset at 8:34 pm CDT.

Sunshine

In DeKalb, the average sunshine in June is 9.5h.

UV index

June and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during June morphs into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

What is the usual temperature for DeKalb in June?

In DeKalb, 77.7°F (25.4°C) is the average high-temperature and 60.1°F (15.6°C) is the average low-temperature during June.

What is the average humidity in June?

In DeKalb, the average relative humidity in June is 81%.

How much does it rain in DeKalb in June?

In June, the rain falls for 18.1 days. Throughout June, 4.13" (105mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in June?

In June, it doesn't snow. May is the latest month when it typically snows.

When are the longest days?

June has the longest days of the year, with an average of 15h and 12min of daylight.

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

In DeKalb, the average day length in June is 15h and 11min.

What time are sunrise and sunset in June?

On the first day of June, sunrise is at 5:21 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:34 pm CDT.

How long on average sun shines in June?

In DeKalb, the average sunshine duration in June is 9.5h.

What are the months with the highest UV index in DeKalb?

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

What is the UV index intensity in June?

The average daily maximum UV index in June is 6. A UV Index reading 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
DeKalb, IL

Average temperature in June - DeKalb, IL
  • Average high temperature in June: 77.7°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in June: 60.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in June
DeKalb, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in June
DeKalb, IL

Average wind speed in June - DeKalb, IL
  • Average wind speed in June: 7.4mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in June
DeKalb, IL

Average humidity in June - DeKalb, IL
  • Average humidity in June: 81%

The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall in June
DeKalb, IL

Average rainfall in June - DeKalb, IL
  • Average rainfall in June: 4.13"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").

Average rainfall days in June
DeKalb, IL

Average rainfall days in June - DeKalb, IL
  • Average rainfall days in June: 18.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).

Average snowfall in June
DeKalb, IL

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

The month with the highest snowfall is January (5.55").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in June
DeKalb, IL

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in June / Average sunshine in June - DeKalb, IL
  • Average daylight in June: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in June: 9h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in June
DeKalb, IL

Average sunshine days in June - DeKalb, IL
  • Average sunshine days in June: 10.3 days

The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).

Average UV index in June
DeKalb, IL

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

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in June
DeKalb, IL

Average cloud cover in June - DeKalb, IL
  • Average cloud cover in June: 37

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

Average visibility in June
DeKalb, IL

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

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

DeKalb, Illinois, USA

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