June weather forecast
River Sioux, IA

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Weather in June

The first month of the summer, June, is a moderately hot month in River Sioux, Iowa, with temperature in the range of an average high of 80.8°F (27.1°C) and an average low of 63.7°F (17.6°C).

Temperature

As June arrives, River Sioux's weather shows an increase in high-temperatures, moving from May's pleasant 70.7°F (21.5°C) to a warm 80.8°F (27.1°C). River Sioux's average low-temperature for the month of June records at an enjoyable 63.7°F (17.6°C).

Heat index

June's average heat index is estimated at 84.2°F (29°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

In River Sioux, the average relative humidity in June is 75%.

Rainfall

In River Sioux, during June, the rain falls for 16.8 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, there are 125.1 rainfall days, and 22.64" (575mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

June has the longest days of the year, with an average of 15h and 12min of daylight.
On the first day of June, sunrise is at 5:51 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 9:03 pm CDT.

Sunshine

In June, the average sunshine is 10.2h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum daily UV index of 6 during June morphs into the following directions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average June temperature?

June temperatures vary between a high-temperature of 80.8°F (27.1°C) and a low-temperature of 63.7°F (17.6°C). In June, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 84.2°F (29°C).

What is the average humidity in June in River Sioux?

The average relative humidity in June is 75%.

How much does it rain in June?

In River Sioux, in June, during 16.8 rainfall days, 3.11" (79mm) of precipitation is typically accumulated.

When it does not snow?

In River Sioux, snow does not fall in June through September.

Does it snow in River Sioux in June?

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

When are the longest days?

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

How many hours of daylight does River Sioux have in June?

In June, the average day length in River Sioux is 15h and 10min.

What time are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:51 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 9:03 pm CDT.

How many hours of sunshine does River Sioux have in June?

In June, the average sunshine duration is 10.2h.

What are the months with the highest UV index?

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

How high is the UV index in June in River Sioux?

In River Sioux, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
River Sioux, IA

Average temperature in June - River Sioux, IA
  • Average high temperature in June: 80.8°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in June: 63.7°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in June
River Sioux, IA

Average pressure in June - River Sioux, IA
  • 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
River Sioux, IA

Average wind speed in June - River Sioux, IA
  • Average wind speed in June: 8.6mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

Average humidity in June
River Sioux, IA

Average humidity in June - River Sioux, IA
  • Average humidity in June: 75%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (66%).

Average rainfall in June
River Sioux, IA

Average rainfall in June - River Sioux, IA
  • Average rainfall in June: 3.11"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days in June
River Sioux, IA

Average rainfall days in June - River Sioux, IA
  • 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 (3.3 days).

Average snowfall in June
River Sioux, IA

Average snowfall in June - River Sioux, IA
  • Average snowfall in June: 0"

The month with the highest snowfall is January (2.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in June
River Sioux, IA

Average snowfall days in June - River Sioux, IA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in June /
Average sunshine in June
River Sioux, IA

Average daylight in June / Average sunshine in June - River Sioux, IA
  • 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: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in June
River Sioux, IA

Average sunshine days in June - River Sioux, IA
  • Average sunshine days in June: 11.3 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in June
River Sioux, IA

Average UV index in June - River Sioux, IA
  • Average UV index in June: 6

The months with the highest UV index are 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
River Sioux, IA

Average cloud cover in June - River Sioux, IA
  • Average cloud cover in June: 30

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in June
River Sioux, IA

Average visibility in June - River Sioux, IA
  • 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).

River Sioux, Iowa, USA

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