August weather forecast
Martensdale, IA

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Weather in August

August, the last month of the summer in Martensdale, is another warm month, with an average temperature ranging between min 62.6°F (17°C) and max 81.3°F (27.4°C).

Temperature

August's beginning signals an average high-temperature of a still moderately hot 81.3°F (27.4°C), barely different from July's 83.1°F (28.4°C). During the month of August, Martensdale anticipates a mean low-temperature of 62.6°F (17°C).

Heat index

For August, the heat index is calculated to be a tropical 87.8°F (31°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

The average relative humidity in August is 79%.

Rainfall

In Martensdale, during August, the rain falls for 12.8 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, there are 118.9 rainfall days, and 18.62" (473mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 47min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:31 pm. On the last day of August, sunrise is at 6:41 am and sunset at 7:49 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

In August, the average high-temperature and low-temperature in Martensdale are 81.3°F (27.4°C) and 62.6°F (17°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August?

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

How many days does it rain in August?

In Martensdale, in August, it is raining for 12.8 days, with typically 2.01" (51mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Martensdale have in August?

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

What time are sunrise and sunset in August in Martensdale?

On the first day of August, sunrise is at 6:10 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:49 pm CDT.

How many hours of sunshine does Martensdale have in August?

The average sunshine duration in August in Martensdale is 9.9h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents 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
Martensdale, IA

Average temperature in August - Martensdale, IA
  • Average high temperature in August: 81.3°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 (28.8°F).

  • Average low temperature in August: 62.6°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 (15.3°F).

Average pressure in August
Martensdale, IA

Average pressure in August - Martensdale, 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
Martensdale, IA

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in August
Martensdale, IA

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

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

Average rainfall in August
Martensdale, IA

Average rainfall in August - Martensdale, IA
  • Average rainfall in August: 2.01"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (0.55").

Average rainfall days in August
Martensdale, IA

Average rainfall days in August - Martensdale, IA
  • Average rainfall days in August: 12.8 days

The months with the highest number of rainy days are May and June (15.9 days).
The month with the least rainy days is January (3.4 days).

Average snowfall in August
Martensdale, IA

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

The month with the highest snowfall is February (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Martensdale, IA

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

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Martensdale, IA

Average daylight in August / Average sunshine in August - Martensdale, 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 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).

Average sunshine days in August
Martensdale, IA

Average sunshine days in August - Martensdale, IA
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (11 days).

Average UV index in August
Martensdale, IA

Average UV index in August - Martensdale, 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
Martensdale, IA

Average cloud cover in August - Martensdale, 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 July (Cloud cover 28).

Average visibility in August
Martensdale, IA

Average visibility in August - Martensdale, 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).

Martensdale, Iowa, USA

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