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
Bethesda marks the start of August with an average high-temperature of a still warm 82.2°F (27.9°C), hinting at a slight fluctuation from July's 83.8°F (28.8°C). Bethesda, in August, observes a steady average low-temperature of 63.7°F (17.6°C).Heat index
The heat index for August is computed to be a hot 89.6°F (32°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.The standards for the heat index are set for locations in shade and under light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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
In August, the average relative humidity is 79%.Rainfall
In Bethesda, during August, the rain falls for 12.6 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Bethesda, during the entire year, the rain falls for 114.9 days and collects up to 18.39" (467mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Bethesda, the average length of the day in August is 13h and 45min.On the first day of August, sunrise is at 6:17 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:53 pm CDT.
Sunshine
In Bethesda, the average sunshine in August is 10h.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 risk from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 6 suggests these recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Bethesda have in August?
When is the highest UV index?
What is the UV index reading in August?
Average temperature in August
Bethesda, IA
- Average high temperature in August: 82.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in August
Bethesda, 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 (29.87"Hg).
Average wind speed in August
Bethesda, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in August
Bethesda, IA
- Average humidity in August: 79%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Bethesda, IA
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in August
Bethesda, IA
- Average rainfall days in August: 12.6 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in August
Bethesda, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Bethesda, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Bethesda, 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: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in August
Bethesda, IA
- Average sunshine days in August: 15 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in August
Bethesda, 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, November and December (UV index 2).
Average cloud cover in August
Bethesda, 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 27).
Average visibility in August
Bethesda, 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).
Bethesda, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location