August weather forecast
Watterson, IA

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Weather in August

August, the last month of the summer in Watterson, is also a moderately hot month, with an average temperature ranging between min 63.3°F (17.4°C) and max 81.7°F (27.6°C).

Temperature

Watterson, Iowa, ushers in August with an average high-temperature of a still warm 81.7°F (27.6°C), showing a close resemblance to the previous month. Watterson, during August, witnesses an average low-temperature of 63.3°F (17.4°C).

Heat index

For August, the heat index is calculated to be a hot 87.8°F (31°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

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

Rainfall

In Watterson, Iowa, in August, during 13.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Watterson, during the entire year, the rain falls for 126.9 days and collects up to 22.6" (574mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August in Watterson is 13h and 44min.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:31 pm. On the last day of August, in Watterson, sunrise is at 6:43 am and sunset at 7:50 pm CDT.

Sunshine

In August, the average sunshine in Watterson, Iowa, 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 exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 6 in August leads to these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Watterson?

In Watterson, in August, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 63.3°F (17.4°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What is the average humidity in August in Watterson?

The average relative humidity in August in Watterson is 79%.

How many days does it rain in August in Watterson?

In Watterson, Iowa, during August, the rain falls for 13.3 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Watterson?

In Watterson, Iowa, snow does not fall in June through September.

What is the average length of the day in August in Watterson?

In August, the average day length is 13h and 44min.

When is the sunrise / sunset in August in Watterson?

On the first day of August, sunrise is at 6:14 am and sunset at 8:31 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 in Watterson?

In August, the average sunshine duration in Watterson is 9.9h.

When is the highest UV index in Watterson?

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

What is the UV index intensity in August in Watterson?

In August, the average daily maximum UV index in Watterson, Iowa, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Watterson, IA

Average temperature in August - Watterson, IA
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

Average pressure in August
Watterson, IA

Average pressure in August - Watterson, 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
Watterson, IA

Average wind speed in August - Watterson, IA
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in August
Watterson, IA

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

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

Average rainfall in August
Watterson, IA

Average rainfall in August - Watterson, IA
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").

Average rainfall days in August
Watterson, IA

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

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).

Average snowfall in August
Watterson, IA

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

The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Watterson, IA

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

The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Watterson, 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: 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 36min).

Average sunshine days in August
Watterson, IA

Average sunshine days in August - Watterson, IA
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in August
Watterson, IA

Average UV index in August - Watterson, 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
Watterson, IA

Average cloud cover in August - Watterson, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August
Watterson, IA

Average visibility in August - Watterson, 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).

Watterson, Iowa, USA

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