July weather forecast
River Sioux, IA

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Weather in July

July, like June, in River Sioux, Iowa, is another warm summer month, with an average temperature varying between 84.4°F (29.1°C) and 65.5°F (18.6°C).

Temperature

River Sioux's temperatures peak on average in July, reaching 84.4°F (29.1°C) at their highest and 65.5°F (18.6°C) at their lowest.

Heat index

For July, the heat index is evaluated at a tropical 93.2°F (34°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The average relative humidity in July is 76%.

Rainfall

In River Sioux, Iowa, in July, it is raining for 13.2 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in River Sioux, there are 125.1 rainfall days, and 22.64" (575mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day in River Sioux is 14h and 52min.
On the first day of July, sunrise is at 5:53 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:43 pm CDT.

Sunshine

The month with the most sunshine in River Sioux is July, with an average of 10.7h of sunshine.

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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 6 in July translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What part of the year is the hottest in River Sioux?

River Sioux's temperatures tend to reach their peak averages in July, with a high of 84.4°F (29.1°C) and a low of 65.5°F (18.6°C).

How hot is July in River Sioux?

The average high-temperature, in July, in River Sioux, is 84.4°F (29.1°C), while the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is evaluated at 93.2°F (34°C).

What is the average humidity in July in River Sioux?

In River Sioux, Iowa, the average relative humidity in July is 76%.

How much does it rain in River Sioux in July?

In July, in River Sioux, the rain falls for 13.2 days. Throughout July, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in River Sioux?

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

What is the average length of the day in July in River Sioux?

The average day length in July is 14h and 52min.

When are sunrise and sunset in July in River Sioux?

On the first day of July in River Sioux, Iowa, sunrise is at 5:53 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 8:43 pm CDT.

What month has the most sunshine in River Sioux?

July has the most sunshine of the year, with an average of 10.7h of sunshine.

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

In River Sioux, the average sunshine duration in July is 10.7h.

What is the month with the highest UV index in River Sioux?

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

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

The average daily maximum UV index in July in River Sioux is 6. A UV Index reading of 6 to 7 represents a high 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 July
River Sioux, IA

Average temperature in July - River Sioux, IA
  • Average high temperature in July: 84.4°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 July: 65.5°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 July
River Sioux, IA

Average pressure in July - River Sioux, IA
  • Average pressure in July: 29.94"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 July
River Sioux, IA

Average wind speed in July - River Sioux, IA
  • Average wind speed in July: 7.2mph

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 July
River Sioux, IA

Average humidity in July - River Sioux, IA
  • Average humidity in July: 76%

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 July
River Sioux, IA

Average rainfall in July - River Sioux, IA
  • Average rainfall in July: 1.89"

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 July
River Sioux, IA

Average rainfall days in July - River Sioux, IA
  • Average rainfall days in July: 13.2 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 July
River Sioux, IA

Average snowfall in July - River Sioux, IA
  • Average snowfall in July: 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 July
River Sioux, IA

Average snowfall days in July - River Sioux, IA
  • Average snowfall days in July: 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 July /
Average sunshine in July
River Sioux, IA

Average daylight in July / Average sunshine in July - River Sioux, IA
  • Average daylight in July: 14h and 5min

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 July: 10h and 4min

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 July
River Sioux, IA

Average sunshine days in July - River Sioux, IA
  • Average sunshine days in July: 15 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 July
River Sioux, IA

Average UV index in July - River Sioux, IA
  • Average UV index in July: 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 July
River Sioux, IA

Average cloud cover in July - River Sioux, IA
  • Average cloud cover in July: 25

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 July
River Sioux, IA

Average visibility in July - River Sioux, IA
  • Average visibility in July: 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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