June weather forecast
Rock Island, IL

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Weather in June

June, the first month of the summer in Rock Island, is a warm month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 62.1°F (16.7°C).

Temperature

With the onset of June, Rock Island's average high-temperature sees a modest rise, moving from May's pleasant 70.3°F (21.3°C) to a warm 79°F (26.1°C). During the nights in June, Rock Island experiences a consistent average temperature of 62.1°F (16.7°C).

Humidity

The average relative humidity in June is 81%.

Rainfall

In Rock Island, Illinois, in June, during 16.6 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Rock Island, during the entire year, the rain falls for 138.1 days and collects up to 27.32" (694mm) of precipitation.

Snowfall

In Rock Island, Illinois, snow does not fall in May through September.

Daylight

With an average of 15h and 6min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:30 am and sunset at 8:30 pm. On the last day of June, sunrise is at 5:32 am and sunset at 8:40 pm CDT.

Sunshine

The average sunshine in June in Rock Island is 9.7h.

UV index

The average daily maximum UV index in June in Rock Island is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 5 in June translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What is the average June temperature in Rock Island?

The average high-temperature and low-temperature in Rock Island, Illinois, during June are 79°F (26.1°C) and 62.1°F (16.7°C) respectively.

What is the average humidity in June in Rock Island?

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

How many days does it rain in June in Rock Island?

In Rock Island, during June, the rain falls for 16.6 days and regularly aggregates up to 3.39" (86mm) of precipitation.

When it does not snow in Rock Island?

In Rock Island, snow does not fall in May through September.

When are the longest days in Rock Island?

June has the longest days of the year, with an average of 15h and 6min of daylight.

How many hours of daylight does Rock Island have in June?

The average day length in June is 15h and 8min.

When is the sunrise / sunset in June in Rock Island?

On the first day of June in Rock Island, Illinois, sunrise is at 5:30 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:40 pm CDT.

How many hours of sunshine does Rock Island have in June?

In June, the average sunshine duration in Rock Island, Illinois, is 9.7h.

What is the UV index reading in June in Rock Island?

The average daily maximum UV index in June in Rock Island is 5. A UV Index of 3 to 5 symbolizes a moderate 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
Rock Island, IL

Average temperature in June - Rock Island, IL
  • Average high temperature in June: 79°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in June: 62.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in June
Rock Island, IL

Average pressure in June - Rock Island, IL
  • Average pressure in June: 29.9"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in June
Rock Island, IL

Average wind speed in June - Rock Island, IL
  • Average wind speed in June: 7.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in June
Rock Island, IL

Average humidity in June - Rock Island, IL
  • Average humidity in June: 81%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in June
Rock Island, IL

Average rainfall in June - Rock Island, IL
  • Average rainfall in June: 3.39"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is February (1.1").

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Average rainfall days in June
Rock Island, IL

Average rainfall days in June - Rock Island, IL
  • Average rainfall days in June: 16.6 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in June
Rock Island, IL

Average snowfall in June - Rock Island, IL
  • Average snowfall in June: 0"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in June
Rock Island, IL

Average snowfall days in June - Rock Island, IL
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (10.9 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
Rock Island, IL

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in June: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in June
Rock Island, IL

Average sunshine days in June - Rock Island, IL
  • Average sunshine days in June: 12 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in June
Rock Island, IL

Average UV index in June - Rock Island, IL
  • Average UV index in June: 5

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in June
Rock Island, IL

Average cloud cover in June - Rock Island, IL
  • Average cloud cover in June: 34

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in June
Rock Island, IL

Average visibility in June - Rock Island, 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).

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Rock Island, Illinois, USA

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