June weather forecast
O'Leary, IA

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Weather in June

June, the first month of the summer in O'Leary, is a moderately hot month, with an average temperature ranging between max 78.1°F (25.6°C) and min 62.2°F (16.8°C).

Temperature

O'Leary's transition into June brings a rise in the average high-temperature, moving from a pleasant 68.7°F (20.4°C) in May to a moderately hot 78.1°F (25.6°C). In June, the average low-temperature in O'Leary records at a comfortable 62.2°F (16.8°C) during the nights.

Humidity

In O'Leary, the average relative humidity in June is 76%.

Rainfall

The month with the most rainfall in O'Leary is June, when the rain falls for 16.8 days and typically aggregates up to 3.35" (85mm) of precipitation.

Snowfall

May through September are months without snowfall in O'Leary.

Daylight

June has the longest days of the year, with an average of 15h and 18min of daylight.
On the first day of June in O'Leary, sunrise is at 5:48 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:06 pm CDT.

Sunshine

In O'Leary, the average sunshine in June is 9.7h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. 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: In June, the maximum UV index of 6 suggests this advice:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average June temperature in O'Leary?

During June, O'Leary experiences an average high-temperature of 78.1°F (25.6°C) and a low-temperature of 62.2°F (16.8°C).

What is the average humidity in June in O'Leary?

In O'Leary, Iowa, the average relative humidity in June is 76%.

What is the rainiest month in O'Leary?

The month with the most rainfall in O'Leary is June, when the rain falls for 16.8 days and typically aggregates up to 3.35" (85mm) of precipitation.

How much does it rain in O'Leary in June?

In June, the rain falls for 16.8 days. Throughout June, 3.35" (85mm) of precipitation is accumulated.

When it does not snow in O'Leary?

In O'Leary, Iowa, snow does not fall in May through September.

When are the longest days in O'Leary?

The month with the longest days in O'Leary is June, with an average of 15h and 18min of daylight.

What is the average length of the day in June in O'Leary?

The average day length in June is 15h and 16min.

When is the sunrise / sunset in June in O'Leary?

In June, on the first day of the month, sunrise is at 5:48 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:06 pm CDT.

How long on average sun shines in June in O'Leary?

In June, the average sunshine duration is 9.7h.

When is the highest UV index in O'Leary?

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

What is the UV index intensity in June in O'Leary?

The average daily maximum UV index in June in O'Leary is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from 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
O'Leary, IA

Average temperature in June - O
  • Average high temperature in June: 78.1°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (24.8°F).

  • Average low temperature in June: 62.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).

Average pressure in June
O'Leary, IA

Average pressure in June - O
  • Average pressure in June: 29.86"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in June
O'Leary, IA

Average wind speed in June - O
  • Average wind speed in June: 8.8mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in June
O'Leary, IA

Average humidity in June - O
  • Average humidity in June: 76%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (66%).

Average rainfall in June
O'Leary, IA

Average rainfall in June - O
  • Average rainfall in June: 3.35"

The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.63").

Average rainfall days in June
O'Leary, IA

Average rainfall days in June - O
  • Average rainfall days in June: 16.8 days

The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (2.4 days).

Average snowfall in June
O'Leary, IA

Average snowfall in June - O
  • Average snowfall in June: 0"

The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in June
O'Leary, IA

Average snowfall days in June - O
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in June /
Average sunshine in June
O'Leary, IA

Average daylight in June / Average sunshine in June - O
  • Average daylight in June: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in June: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in June
O'Leary, IA

Average sunshine days in June - O
  • Average sunshine days in June: 11.7 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in June
O'Leary, IA

Average UV index in June - O
  • Average UV index in June: 6

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

Average cloud cover in June
O'Leary, IA

Average cloud cover in June - O
  • Average cloud cover in June: 34

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in June
O'Leary, IA

Average visibility in June - O
  • 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).

O'Leary, Iowa, USA

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