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
The transition into August marks the average high-temperature at a still warm 82°F (27.8°C), differing minimally from July's 84°F (28.9°C). The mean low-temperature during August nights is a comfortable 63.1°F (17.3°C).Heat index
For August, the heat index is calculated to be a hot 87.8°F (31°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In Underwood, the average relative humidity in August is 77%.Rainfall
In Underwood, during August, the rain falls for 13.6 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Underwood, during the entire year, the rain falls for 125.8 days and collects up to 25.35" (644mm) of precipitation.Snowfall
In Underwood, snow does not fall in June through September.Daylight
The average length of the day in August in Underwood is 13h and 47min.On the first day of August in Underwood, sunrise is at 6:18 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:56 pm CDT.
Sunshine
In August, the average sunshine is 9.9h.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 health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 6 in August translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Underwood?
What is the average humidity in August in Underwood?
How many days does it rain in August in Underwood?
When it does not snow in Underwood?
What is the average length of the day in August in Underwood?
When are sunrise and sunset in August in Underwood?
How long on average sun shines in August in Underwood?
What are the months with the highest UV index in Underwood?
What is the UV index reading in August in Underwood?
Average temperature in August
Underwood, IA
- Average high temperature in August: 82°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in August: 63.1°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 (16.3°F).
Average pressure in August
Underwood, IA
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Underwood, IA
- Average wind speed in August: 7.2mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in August
Underwood, IA
- Average humidity in August: 77%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Underwood, IA
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in August
Underwood, IA
- Average rainfall days in August: 13.6 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in August
Underwood, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Underwood, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Underwood, 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 12min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in August
Underwood, IA
- Average sunshine days in August: 14.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in August
Underwood, IA
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in August
Underwood, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in August
Underwood, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Underwood, Iowa, USA
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