August weather forecast
Runnells, IA

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Weather in August

August, the last month of the summer in Runnells, is another warm month, with an average temperature varying between 62.2°F (16.8°C) and 81.5°F (27.5°C).

Temperature

Transitioning into August, Runnells experiences an average high-temperature of a still moderately hot 81.5°F (27.5°C), marking a minor shift from the preceding month. Runnells in August anticipates an average nighttime temperature of 62.2°F (16.8°C).

Heat index

August's mean heat index is calculated to be a hot 87.8°F (31°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

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

Rainfall

In August, the rain falls for 11.5 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 124.7 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Runnells.

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

The average sunshine in August is 9.7h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Runnells?

In Runnells, 81.5°F (27.5°C) is the average high-temperature and 62.2°F (16.8°C) is the average low-temperature during August. The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August?

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

How much does it rain in August?

In August, the rain falls for 11.5 days. Throughout August, 2.36" (60mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Runnells have in August?

In August, the average day length is 13h and 47min.

What time are sunrise and sunset in August?

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.

How many hours of sunshine does Runnells have in August?

In Runnells, the average sunshine duration in August is 9.7h.

When is the highest UV index?

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?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Runnells, Iowa, USA

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