August weather forecast
Thayer, IA

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Weather in August

August, the last month of the summer in Thayer, is another warm month, with an average temperature varying between 81.7°F (27.6°C) and 63.1°F (17.3°C).

Temperature

Thayer records an average high-temperature of a still warm 81.7°F (27.6°C) in August, maintaining a close correlation with July's 83.3°F (28.5°C). Thayer records an average low-temperature of 63.1°F (17.3°C) throughout the month of August.

Heat index

August's mean heat index is calculated to be a tropical 87.8°F (31°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

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

Rainfall

In August, the rain falls for 13.3 days. Throughout August, 2.13" (54mm) of precipitation is accumulated. In Thayer, during the entire year, the rain falls for 122.6 days and collects up to 20.43" (519mm) of precipitation.

Snowfall

June through September are months without snowfall in Thayer.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of August in Thayer, sunrise is at 6:12 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 7:49 pm CDT.

Sunshine

In August, the average sunshine is 9.8h.

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 the ordinary person.
Note: In August, the maximum UV index of 6 suggests this advice:
Take precautions against overexposure. Protection against sun damage is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What is the usual temperature for Thayer in August?

August temperatures in Thayer, Iowa, vary between a high-temperature of 81.7°F (27.6°C) and a low-temperature of 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), 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 Thayer?

In August, the average relative humidity is 79%.

How many days does it rain in August in Thayer?

In Thayer, Iowa, in August, during 13.3 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When it does not snow in Thayer?

June through September are months without snowfall in Thayer.

How many hours of daylight does Thayer have in August?

In Thayer, the average day length in August is 13h and 46min.

What time are sunrise and sunset in August in Thayer?

In August, on the first day of the month, sunrise is at 6:12 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 7:49 pm CDT.

How many hours of sunshine does Thayer have in August?

The average sunshine duration in August in Thayer, Iowa, is 9.8h.

When is the highest UV index in Thayer?

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

What is the UV index reading in August in Thayer?

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

Average temperature in August - Thayer, IA
  • Average high temperature in August: 81.7°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 (29.1°F).

  • Average low temperature in August: 63.1°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 (15.8°F).

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Average pressure in August
Thayer, IA

Average pressure in August - Thayer, IA
  • Average pressure in August: 29.96"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
Thayer, IA

Average wind speed in August - Thayer, IA
  • Average wind speed in August: 7.1mph

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 (7.1mph).

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Average humidity in August
Thayer, IA

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

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Thayer, IA

Average rainfall in August - Thayer, IA
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is December (0.63").

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Average rainfall days in August
Thayer, IA

Average rainfall days in August - Thayer, IA
  • Average rainfall days in August: 13.3 days

The months with the highest number of rainy days are May and June (16.4 days).
The months with the least rainy days are January and February (3.7 days).

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Average snowfall in August
Thayer, IA

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

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Thayer, IA

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

The month with the highest number of snowfall days is January (9.2 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
Thayer, IA

Average daylight in August / Average sunshine in August - Thayer, 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 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in August
Thayer, IA

Average sunshine days in August - Thayer, IA
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is December (21 days).
The months with the least sunshine days are May and June (11.3 days).

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Average UV index in August
Thayer, IA

Average UV index in August - Thayer, 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
Thayer, IA

Average cloud cover in August - Thayer, 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 September (Cloud cover 29).

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Average visibility in August
Thayer, IA

Average visibility in August - Thayer, IA
  • Average visibility in August: 5mi

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

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Thayer, Iowa, USA

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