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 an average temperature varying between 63.7°F (17.6°C) and 80.8°F (27.1°C).

Temperature

June's arrival brings a change in high-temperatures, moving from a pleasant 70.7°F (21.5°C) in May to a warm 80.8°F (27.1°C). During the month of June, an average temperature of 63.7°F (17.6°C) is noted during the nights in River Sioux.

Heat index

For most parts of June, the heat index is evaluated at 84.2°F (29°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 hold particular importance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

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

Rainfall

In River Sioux, Iowa, in June, it is raining for 16.8 days, with typically 3.11" (79mm) of accumulated 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 in River Sioux, with an average of 15h and 12min of daylight.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:53 pm. On the last day of June, in River Sioux, sunrise is at 5:52 am and sunset at 9:03 pm CDT.

Sunshine

In June, the average sunshine in River Sioux is 10.2h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in June transforms into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What are June temperatures in River Sioux?

During June, River Sioux experiences an average high-temperature of 80.8°F (27.1°C) and a low-temperature of 63.7°F (17.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in June is evaluated at 84.2°F (29°C).

What is the average humidity in June in River Sioux?

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

How much does it rain in River Sioux in June?

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

When it does not snow in River Sioux?

June through September are months without snowfall in River Sioux.

Does it snow in River Sioux in June?

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

When are the longest days in River Sioux?

The month with the longest days in River Sioux, Iowa, is June, with an average of 15h and 12min of daylight.

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

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

When is the sunrise / sunset in June in River Sioux?

On the first day of June in River Sioux, Iowa, 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 long on average sun shines in June in River Sioux?

In River Sioux, Iowa, the average sunshine duration in June is 10.2h.

What are the months with the highest UV index in River Sioux?

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

What is the UV index reading in June in River Sioux?

The average daily maximum UV index in June in River Sioux is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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River Sioux, Iowa, USA

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