August weather forecast
Runnells, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Runnells, Iowa, with an average temperature fluctuating between 81.5°F (27.5°C) and 62.2°F (16.8°C).

Temperature

August welcomes an average high-temperature of a still moderately hot 81.5°F (27.5°C), not much different from the preceding month. During the nights in August, Runnells experiences a consistent average temperature of 62.2°F (16.8°C).

Heat index

August's heat index is estimated at a tropical 87.8°F (31°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

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

Rainfall

In Runnells, in August, it is raining for 11.5 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, in Runnells, there are 124.7 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Runnells, the average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 6:08 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:47 pm CDT.

Sunshine

In August, the average sunshine is 9.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Runnells in August?

August temperatures in Runnells vary between a high-temperature of 81.5°F (27.5°C) and a low-temperature of 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in August in Runnells?

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

How many days does it rain in August in Runnells?

In Runnells, in August, during 11.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

When it does not snow in Runnells?

June through September are months without snowfall.

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

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

When is the sunrise / sunset in August in Runnells?

On the first day of August in Runnells, sunrise is at 6:08 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:47 pm CDT.

How long on average sun shines in August in Runnells?

In August, the average sunshine duration is 9.7h.

When is the highest UV index in Runnells?

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

How high is the UV index in August in Runnells?

In August, the average daily maximum UV index in Runnells is 6. A UV Index of 6 to 7 symbolizes a high 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
Runnells, IA

Average temperature in August - Runnells, IA
  • Average high temperature in August: 81.5°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 (28.4°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure in August
Runnells, IA

Average pressure in August - Runnells, 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
Runnells, IA

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

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in August
Runnells, IA

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

The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Runnells, IA

Average rainfall in August - Runnells, IA
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in August
Runnells, IA

Average rainfall days in August - Runnells, IA
  • Average rainfall days in August: 11.5 days

The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (4 days).

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Average snowfall in August
Runnells, IA

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

The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Runnells, IA

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

The month with the highest number of snowfall days is January (10.8 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
Runnells, IA

Average daylight in August / Average sunshine in August - Runnells, 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 12min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Runnells, IA

Average sunshine days in August - Runnells, IA
  • Average sunshine days in August: 18.2 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.7 days).

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Average UV index in August
Runnells, IA

Average UV index in August - Runnells, 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
Runnells, IA

Average cloud cover in August - Runnells, IA
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 31).

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Average visibility in August
Runnells, IA

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

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

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Runnells, Iowa, USA

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