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 advent of August brings an average high-temperature of a still warm 81.1°F (27.3°C), exhibiting minor difference from the previous month. Washington in August anticipates an average nighttime temperature of 63°F (17.2°C).Heat index
In August, the heat index is estimated at a hot 86°F (30°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in August is 79%.Rainfall
In Washington, during August, the rain falls for 11.8 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Washington, during the entire year, the rain falls for 123.7 days and collects up to 18.94" (481mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in August in Washington is 13h and 47min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:23 pm. On the last day of August, in Washington, sunrise is at 6:32 am and sunset at 7:40 pm CDT.
Sunshine
In August, the average sunshine is 10.1h.UV index
In Washington, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In August, a regular UV index of 5 translates into these guidelines:
Prioritize safety - Suggestions to prevent sun damage are offered. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Washington in August?
What is the average humidity in August in Washington?
How many days does it rain in August in Washington?
When it does not snow in Washington?
What is the average length of the day in August in Washington?
When is the sunrise / sunset in August in Washington?
How long on average sun shines in August in Washington?
How high is the UV index in August in Washington?
Average temperature in August
Washington, IA
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 63°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in August
Washington, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Washington, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in August
Washington, IA
- Average humidity in August: 79%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Washington, IA
- Average rainfall in August: 1.34"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in August
Washington, IA
- Average rainfall days in August: 11.8 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in August
Washington, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Washington, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Washington, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Washington, IA
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in August
Washington, IA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in August
Washington, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in August
Washington, IA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Washington, Iowa, USA
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