August weather forecast
Mount Sterling, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Mount Sterling, Iowa, with an average temperature fluctuating between 82.8°F (28.2°C) and 63.9°F (17.7°C).

Temperature

A minor adjustment in Mount Sterling's average high-temperature is noted with the start of August, touching a still moderately hot 82.8°F (28.2°C) from July's 83.3°F (28.5°C). Mount Sterling experiences a mean temperature of 63.9°F (17.7°C) during August nights.

Heat index

The heat index value for August is estimated at a tropical 89.6°F (32°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Data suggests that the heat index is set for environments in shade and with a light wind. 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 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

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

Rainfall

In August, the rain falls for 12.9 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. In Mount Sterling, during the entire year, the rain falls for 136.6 days and collects up to 28.5" (724mm) of precipitation.

Snowfall

In Mount Sterling, snow does not fall in May through September.

Daylight

In Mount Sterling, the average length of the day in August is 13h and 44min.
On the first day of the month, sunrise is at 6:05 am and sunset at 8:22 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:40 pm CDT.

Sunshine

In Mount Sterling, the average sunshine in August is 10h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Mount Sterling?

During August, Mount Sterling experiences an average high-temperature of 82.8°F (28.2°C) and a low-temperature of 63.9°F (17.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in August in Mount Sterling?

In Mount Sterling, Iowa, the average relative humidity in August is 78%.

How many days does it rain in August in Mount Sterling?

In Mount Sterling, Iowa, in August, during 12.9 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Mount Sterling?

May through September are months without snowfall in Mount Sterling, Iowa.

What is the average length of the day in August in Mount Sterling?

In Mount Sterling, Iowa, the average day length in August is 13h and 44min.

What time are sunrise and sunset in August in Mount Sterling?

On the first day of August, sunrise is at 6:05 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:40 pm CDT.

How long on average sun shines in August in Mount Sterling?

In Mount Sterling, Iowa, the average sunshine duration in August is 10h.

What is the month with the highest UV index in Mount Sterling?

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

How high is the UV index in August in Mount Sterling?

The average daily maximum UV index in August in Mount Sterling is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Mount Sterling, IA

Average temperature in August - Mount Sterling, IA
  • Average high temperature in August: 82.8°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 (31.3°F).

  • Average low temperature in August: 63.9°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in August
Mount Sterling, IA

Average pressure in August - Mount Sterling, 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 (29.9"Hg).

Average wind speed in August
Mount Sterling, IA

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

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 (6.9mph).

Average humidity in August
Mount Sterling, IA

Average humidity in August - Mount Sterling, IA
  • Average humidity in August: 78%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Mount Sterling, IA

Average rainfall in August - Mount Sterling, IA
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is June (4.09").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in August
Mount Sterling, IA

Average rainfall days in August - Mount Sterling, IA
  • Average rainfall days in August: 12.9 days

The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in August
Mount Sterling, IA

Average snowfall in August - Mount Sterling, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Mount Sterling, IA

Average snowfall days in August - Mount Sterling, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Mount Sterling, IA

Average daylight in August / Average sunshine in August - Mount Sterling, 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: 10h and 0min

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).

Average sunshine days in August
Mount Sterling, IA

Average sunshine days in August - Mount Sterling, IA
  • Average sunshine days in August: 15.9 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.3 days).

Average UV index in August
Mount Sterling, IA

Average UV index in August - Mount Sterling, IA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Mount Sterling, IA

Average cloud cover in August - Mount Sterling, 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).

Average visibility in August
Mount Sterling, IA

Average visibility in August - Mount Sterling, 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).

Mount Sterling, Iowa, USA

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