August weather forecast
Osceola, IA

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Weather in August

The last month of the summer, August, is another warm month in Osceola, Iowa, with an average temperature fluctuating between 81.7°F (27.6°C) and 63.1°F (17.3°C).

Temperature

In August, Osceola notes an average high-temperature of a still warm 81.7°F (27.6°C), hardly different from the preceding month. August nights in Osceola observe an average temperature dip to a comfortable 63.1°F (17.3°C).

Heat index

For most parts of August, the heat index is calculated to be a tropical 87.8°F (31°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

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

Rainfall

In August, in Osceola, the rain falls for 13.3 days. Throughout August, 2.13" (54mm) of precipitation is accumulated. In Osceola, during the entire year, the rain falls for 122.6 days and collects up to 20.43" (519mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 46min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:30 pm. On the last day of August, sunrise is at 6:41 am and sunset at 7:48 pm CDT.

Sunshine

The average sunshine in August in Osceola is 9.8h.

UV index

The months with the highest UV index in Osceola are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 during August translates into the following guidance:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What are August temperatures in Osceola?

The average high-temperature and low-temperature in Osceola during August are 81.7°F (27.6°C) and 63.1°F (17.3°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August in Osceola?

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

How much does it rain in Osceola in August?

In Osceola, during August, the rain falls for 13.3 days and regularly aggregates up to 2.13" (54mm) of precipitation.

When it does not snow in Osceola?

June through September are months without snowfall in Osceola.

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

The average day length in August is 13h and 46min.

What time are sunrise and sunset in August in Osceola?

On the first day of August in Osceola, Iowa, sunrise is at 6:11 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:48 pm CDT.

How many hours of sunshine does Osceola have in August?

The average sunshine duration in August is 9.8h.

What is the month with the highest UV index in Osceola?

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

What is the UV index intensity in August in Osceola?

The average daily maximum UV index in August in Osceola is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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 August
Osceola, IA

Average temperature in August - Osceola, IA
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure in August
Osceola, IA

Average pressure in August - Osceola, IA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
Osceola, IA

Average wind speed in August - Osceola, IA
  • Average wind speed in August: 7.1mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in August
Osceola, IA

Average humidity in August - Osceola, 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 (71%).

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Average rainfall in August
Osceola, IA

Average rainfall in August - Osceola, IA
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is December (0.63").

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Average rainfall days in August
Osceola, IA

Average rainfall days in August - Osceola, IA
  • Average rainfall days in August: 13.3 days

The months with the highest number of rainy days are May and June (16.4 days).
The months with the least rainy days are January and February (3.7 days).

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Average snowfall in August
Osceola, IA

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

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Osceola, IA

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

The month with the highest number of snowfall days is January (9.2 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
Osceola, IA

Average daylight in August / Average sunshine in August - Osceola, 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 18min).

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Average sunshine days in August
Osceola, IA

Average sunshine days in August - Osceola, IA
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is December (21 days).
The months with the least sunshine days are May and June (11.3 days).

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Average UV index in August
Osceola, IA

Average UV index in August - Osceola, IA
  • Average UV index in August: 6

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

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Average cloud cover in August
Osceola, IA

Average cloud cover in August - Osceola, IA
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in August
Osceola, IA

Average visibility in August - Osceola, IA
  • Average visibility in August: 5mi

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

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Osceola, Iowa, USA

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