August weather forecast
Oskaloosa, IA

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Weather in August

August in Oskaloosa continues to experience high temperatures, making it one of the hottest months of the year. However, it’s somewhat cooler than July, providing a slight relief to the residents. Notably, this month experiences a decrease in wind speed, resulting in calm, hot days. As summer continues, people still enjoy various outdoor activities, while indoor activities also gain momentum to beat the summer heat.

Temperature

August's onset in Oskaloosa, Iowa, records an average high-temperature of a still moderately hot 81.1°F (27.3°C), a near match to July's 82.2°F (27.9°C). In Oskaloosa, in August, the average low-temperature is a comfortable 62.6°F (17°C).

Heat index

August's heat index is calculated to be a hot 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

In August, the average relative humidity in Oskaloosa is 79%.

Rainfall

In Oskaloosa, in August, during 14.2 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 141.1 rainfall days, and 28.5" (724mm) of precipitation is accumulated.

Snowfall

In Oskaloosa, snow does not fall in June through September.

Daylight

In August, the average length of the day in Oskaloosa is 13h and 47min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:27 pm. On the last day of August, in Oskaloosa, sunrise is at 6:36 am and sunset at 7:44 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 5 in August leads to these guidelines:
Act with care - The need to guard against sun damage is communicated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the usual temperature for Oskaloosa in August?

In Oskaloosa, 81.1°F (27.3°C) is the average high-temperature and 62.6°F (17°C) is the average low-temperature during August. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the average humidity in August in Oskaloosa?

In Oskaloosa, Iowa, the average relative humidity in August is 79%.

How many days does it rain in August in Oskaloosa?

In Oskaloosa, Iowa, in August, it is raining for 14.2 days, with typically 2.44" (62mm) of accumulated precipitation.

When it does not snow in Oskaloosa?

June through September are months without snowfall.

What is the average length of the day in August in Oskaloosa?

The average day length in August is 13h and 47min.

What time are sunrise and sunset in August in Oskaloosa?

On the first day of August, sunrise is at 6:06 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:44 pm CDT.

How long on average sun shines in August in Oskaloosa?

In Oskaloosa, the average sunshine duration in August is 9.9h.

What is the UV index intensity in August in Oskaloosa?

The average daily maximum UV index in August in Oskaloosa is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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 August
Oskaloosa, IA

Average temperature in August - Oskaloosa, IA
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in August: 62.6°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 (15.3°F).

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Average pressure in August
Oskaloosa, IA

Average pressure in August - Oskaloosa, IA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
Oskaloosa, IA

Average wind speed in August - Oskaloosa, IA
  • Average wind speed in August: 6.9mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in August
Oskaloosa, IA

Average humidity in August - Oskaloosa, IA
  • Average humidity in August: 79%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Oskaloosa, IA

Average rainfall in August - Oskaloosa, IA
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days in August
Oskaloosa, IA

Average rainfall days in August - Oskaloosa, IA
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in August
Oskaloosa, IA

Average snowfall in August - Oskaloosa, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Oskaloosa, IA

Average snowfall days in August - Oskaloosa, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Oskaloosa, IA

Average daylight in August / Average sunshine in August - Oskaloosa, IA
  • Average daylight in August: 13h and 5min

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

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in August
Oskaloosa, IA

Average sunshine days in August - Oskaloosa, IA
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9 days).

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Average UV index in August
Oskaloosa, IA

Average UV index in August - Oskaloosa, 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).

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Average cloud cover in August
Oskaloosa, IA

Average cloud cover in August - Oskaloosa, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).

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Average visibility in August
Oskaloosa, IA

Average visibility in August - Oskaloosa, IA
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

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Oskaloosa, Iowa, USA

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