Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Cromwell's average high-temperature in August sits at a still warm 81°F (27.2°C), showing little difference from the previous month. Throughout August, an average nighttime temperature of 63°F (17.2°C) is experienced.Heat index
The average heat index in August is estimated at a tropical 86°F (30°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. 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 are particularly important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in August is 79%.Rainfall
In Cromwell, in August, it is raining for 13.8 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Cromwell, there are 127.7 rainfall days, and 23.39" (594mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:33 pm. On the last day of August, in Cromwell, sunrise is at 6:44 am and sunset at 7:51 pm CDT.
Sunshine
In August, the average sunshine is 9.7h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 6 in August leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Cromwell have in August?
When are sunrise and sunset in August?
How long on average sun shines in August?
What is the month with the highest UV index?
What is the UV index reading in August?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Cromwell, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location