August weather forecast
Afton, IA

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Weather in August

August, the last month of the summer in Afton, is another warm month, with an average temperature ranging between max 81°F (27.2°C) and min 63°F (17.2°C).

Temperature

On the advent of August, Afton's average high-temperature exhibits a minor adjustment to a still warm 81°F (27.2°C) from July's 82.9°F (28.3°C). The temperature dips to an average of 63°F (17.2°C) during August nights.

Heat index

During August, the heat index is computed to be a hot 86°F (30°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Consider that heat index readings are for situations in the shade and light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Afton, in August, it is raining for 13.8 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 127.7 rainfall days, and 23.39" (594mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Afton, the average length of the day in August is 13h and 46min.
On the first day of August, sunrise is at 6:13 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:50 pm CDT.

Sunshine

In Afton, the average sunshine in August 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 estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 suggests this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

During August, Afton experiences an average high-temperature of 81°F (27.2°C) and a low-temperature of 63°F (17.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in August?

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

How many days does it rain in August?

In August, the rain falls for 13.8 days. Throughout August, 2.44" (62mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Afton have in August?

The average day length in August is 13h and 46min.

When are sunrise and sunset in August in Afton?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:50 pm CDT.

How long on average sun shines in August?

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?

In Afton, 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 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
Afton, IA

Average temperature in August - Afton, IA
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in August: 63°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in August
Afton, IA

Average pressure in August - Afton, 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 (29.88"Hg).

Average wind speed in August
Afton, IA

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

The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in August
Afton, IA

Average humidity in August - Afton, 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
Afton, IA

Average rainfall in August - Afton, IA
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in August
Afton, IA

Average rainfall days in August - Afton, IA
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.7 days).

Average snowfall in August
Afton, IA

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

The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Afton, IA

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

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Afton, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in August
Afton, IA

Average sunshine days in August - Afton, IA
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.7 days).

Average UV index in August
Afton, IA

Average UV index in August - Afton, 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
Afton, IA

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

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 30).

Average visibility in August
Afton, IA

Average visibility in August - Afton, 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).

Afton, Iowa, USA

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