August weather forecast
Centerville, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Centerville, Iowa, with an average temperature fluctuating between 82°F (27.8°C) and 63.5°F (17.5°C).

Temperature

Centerville records an average high-temperature of a still warm 82°F (27.8°C) as August arrives, nearly mirroring the previous month's climate. In the month of August, the average temperature dips to a refreshing 63.5°F (17.5°C) during the night.

Heat index

In August, the average heat index is evaluated at a tropical 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Centerville, the average relative humidity in August is 78%.

Rainfall

In Centerville, in August, during 14.8 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Centerville, during the entire year, the rain falls for 143.2 days and collects up to 27.48" (698mm) of precipitation.

Snowfall

June through September are months without snowfall in Centerville.

Daylight

In Centerville, the average length of the day in August is 13h and 44min.
On the first day of August in Centerville, Iowa, sunrise is at 6:08 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:44 pm CDT.

Sunshine

In Centerville, the average sunshine in August is 9.9h.

UV index

In Centerville, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, a regular UV index of 5 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the usual temperature for Centerville in August?

August temperatures vary between a high-temperature of 82°F (27.8°C) and a low-temperature of 63.5°F (17.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the average humidity in August in Centerville?

The average relative humidity in August in Centerville is 78%.

How many days does it rain in August in Centerville?

In Centerville, Iowa, during August, the rain falls for 14.8 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Centerville?

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

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

In August, the average day length in Centerville is 13h and 44min.

When are sunrise and sunset in August in Centerville?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:26 pm. On the last day of the month, in Centerville, Iowa, sunrise is at 6:38 am and sunset at 7:44 pm CDT.

How long on average sun shines in August in Centerville?

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

What is the UV index intensity in August in Centerville?

In Centerville, Iowa, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate 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 August
Centerville, IA

Average temperature in August - Centerville, IA
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 63.5°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure in August
Centerville, IA

Average pressure in August - Centerville, IA
  • Average pressure in August: 29.97"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
Centerville, IA

Average wind speed in August - Centerville, IA
  • Average wind speed in August: 7mph

The windiest months (with the highest average wind speed) are January, February and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in August
Centerville, IA

Average humidity in August - Centerville, IA
  • Average humidity in August: 78%

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
Centerville, IA

Average rainfall in August - Centerville, IA
  • Average rainfall in August: 2.76"

The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in August
Centerville, IA

Average rainfall days in August - Centerville, IA
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).

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Average snowfall in August
Centerville, IA

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

The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Centerville, IA

Average snowfall days in August - Centerville, IA
  • Average snowfall days in August: 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 August /
Average sunshine in August
Centerville, IA

Average daylight in August / Average sunshine in August - Centerville, IA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in August
Centerville, IA

Average sunshine days in August - Centerville, IA
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.8 days).

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Average UV index in August
Centerville, IA

Average UV index in August - Centerville, 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
Centerville, IA

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

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).

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Average visibility in August
Centerville, IA

Average visibility in August - Centerville, 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).

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Centerville, Iowa, USA

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