August weather forecast
Sergeant Bluff, IA

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Weather in August

August, the last month of the summer in Sergeant Bluff, is another warm month, with an average temperature fluctuating between 61.5°F (16.4°C) and 81.9°F (27.7°C).

Temperature

As Sergeant Bluff steps into August, the average high-temperature holds at a still moderately hot 81.9°F (27.7°C), hinting at a minor fluctuation from the prior month. Sergeant Bluff records an average temperature drop to a refreshing 61.5°F (16.4°C) in August.

Heat index

For most parts of August, the heat index is calculated to be a tropical 87.8°F (31°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 11.7 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. In Sergeant Bluff, during the entire year, the rain falls for 102.3 days and collects up to 12.91" (328mm) of precipitation.

Snowfall

In Sergeant Bluff, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 51min.
On the first day of August, sunrise is at 6:18 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:00 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

In Sergeant Bluff, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 5 during August translates into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The average high-temperature, in August, in Sergeant Bluff, is 81.9°F (27.7°C), while the average low-temperature is 61.5°F (16.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August?

In Sergeant Bluff, the average relative humidity in August is 75%.

How many days does it rain in August in Sergeant Bluff?

In Sergeant Bluff, in August, during 11.7 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow?

May through September are months without snowfall.

How many hours of daylight does Sergeant Bluff have in August?

In August, the average day length is 13h and 51min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:18 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:00 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.9h.

What is the UV index intensity in August in Sergeant Bluff?

In Sergeant Bluff, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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 August
Sergeant Bluff, IA

Average temperature in August - Sergeant Bluff, IA
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in August: 61.5°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 (13.5°F).

Average pressure in August
Sergeant Bluff, IA

Average pressure in August - Sergeant Bluff, IA
  • Average pressure in August: 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).

Average wind speed in August
Sergeant Bluff, IA

Average wind speed in August - Sergeant Bluff, IA
  • Average wind speed in August: 7.8mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in August
Sergeant Bluff, IA

Average humidity in August - Sergeant Bluff, IA
  • Average humidity in August: 75%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (65%).

Average rainfall in August
Sergeant Bluff, IA

Average rainfall in August - Sergeant Bluff, IA
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.39").

Average rainfall days in August
Sergeant Bluff, IA

Average rainfall days in August - Sergeant Bluff, IA
  • Average rainfall days in August: 11.7 days

The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (2.6 days).

Average snowfall in August
Sergeant Bluff, IA

Average snowfall in August - Sergeant Bluff, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Sergeant Bluff, IA

Average snowfall days in August - Sergeant Bluff, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Sergeant Bluff, IA

Average daylight in August / Average sunshine in August - Sergeant Bluff, IA
  • Average daylight in August: 13h 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 6min).

  • Average sunshine in August: 9h and 5min

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 30min).

Average sunshine days in August
Sergeant Bluff, IA

Average sunshine days in August - Sergeant Bluff, IA
  • Average sunshine days in August: 16.1 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (13.1 days).

Average UV index in August
Sergeant Bluff, IA

Average UV index in August - Sergeant Bluff, IA
  • Average UV index in August: 5

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

Average cloud cover in August
Sergeant Bluff, IA

Average cloud cover in August - Sergeant Bluff, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in August
Sergeant Bluff, IA

Average visibility in August - Sergeant Bluff, IA
  • Average visibility in August: 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).

Sergeant Bluff, Iowa, USA

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