August weather forecast
Cromwell, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Cromwell, Iowa, with an average temperature varying between 63°F (17.2°C) and 81°F (27.2°C).

Temperature

As Cromwell steps into August, the average high-temperature holds at a still moderately hot 81°F (27.2°C), hinting at a minor fluctuation from the prior month. The temperature lowers to an average of 63°F (17.2°C) during August nights.

Heat index

August's mean heat index is estimated at a hot 86°F (30°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

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

Rainfall

In Cromwell, during August, the rain falls for 13.8 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Cromwell, during the entire year, the rain falls for 127.7 days and collects up to 23.39" (594mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day in Cromwell is 13h and 46min.
On the first day of August in Cromwell, sunrise is at 6:14 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:51 pm CDT.

Sunshine

In August, the average sunshine in Cromwell is 9.7h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Cromwell. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In August, the UV index of 6 transforms into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What are August temperatures in Cromwell?

In Cromwell, 81°F (27.2°C) is the average high-temperature and 63°F (17.2°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in August in Cromwell?

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

How much does it rain in Cromwell in August?

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

When it does not snow in Cromwell?

June through September are months without snowfall in Cromwell.

How many hours of daylight does Cromwell have in August?

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

When are sunrise and sunset in August in Cromwell?

In August, on the first day of the month, sunrise is at 6:14 am and sunset at 8:33 pm. On the last day of the month, in Cromwell, Iowa, sunrise is at 6:44 am and sunset at 7:51 pm CDT.

How long on average sun shines in August in Cromwell?

In August, the average sunshine duration in Cromwell, Iowa, is 9.7h.

What are the months with the highest UV index in Cromwell?

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

What is the UV index reading in August in Cromwell?

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

Average temperature in August - Cromwell, 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).

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Average pressure in August
Cromwell, IA

Average pressure in August - Cromwell, 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).

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Average wind speed in August
Cromwell, IA

Average wind speed in August - Cromwell, 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).

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Average humidity in August
Cromwell, IA

Average humidity in August - Cromwell, 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%).

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Average rainfall in August
Cromwell, IA

Average rainfall in August - Cromwell, 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").

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Average rainfall days in August
Cromwell, IA

Average rainfall days in August - Cromwell, 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).

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Average snowfall in August
Cromwell, IA

Average snowfall in August - Cromwell, 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").

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Average snowfall days in August
Cromwell, IA

Average snowfall days in August - Cromwell, 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).

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

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

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Average sunshine days in August
Cromwell, IA

Average sunshine days in August - Cromwell, 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).

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Average UV index in August
Cromwell, IA

Average UV index in August - Cromwell, 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
Cromwell, IA

Average cloud cover in August - Cromwell, 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).

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Average visibility in August
Cromwell, IA

Average visibility in August - Cromwell, 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).

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Cromwell, Iowa, USA

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