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 commencement of August notes an average high-temperature of a still warm 81.7°F (27.6°C), exhibiting little difference from the previous month. Williamsville in August experiences a low-temperature average of 64°F (17.8°C).Heat index
August's mean heat index is appraised at a tropical 87.8°F (31°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. 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 highly critical to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In Williamsville, Illinois, the average relative humidity in August is 82%.Rainfall
In August, in Williamsville, the rain falls for 12.8 days. Throughout August, 1.89" (48mm) of precipitation is accumulated. In Williamsville, Illinois, during the entire year, the rain falls for 131.5 days and collects up to 18.54" (471mm) of precipitation.Snowfall
In Williamsville, Illinois, snow does not fall in May through October.Daylight
In Williamsville, Illinois, the average length of the day in August is 13h and 42min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:30 pm CDT.
Sunshine
The average sunshine in August 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 of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 6 in August leads to these recommendations:
Take precautions against overexposure. Protection against sun damage is needed. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the temperature in August in Williamsville?
What is the average humidity in August in Williamsville?
How much does it rain in Williamsville in August?
When it does not snow in Williamsville?
How many hours of daylight does Williamsville have in August?
When is the sunrise / sunset in August in Williamsville?
How long on average sun shines in August in Williamsville?
What is the month with the highest UV index in Williamsville?
How high is the UV index in August in Williamsville?
Average temperature in August
Williamsville, IL
- Average high temperature in August: 81.7°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in August: 64°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in August
Williamsville, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Williamsville, IL
- Average wind speed in August: 6.2mph
The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in August
Williamsville, IL
- Average humidity in August: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Williamsville, IL
- Average rainfall in August: 1.89"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days in August
Williamsville, IL
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in August
Williamsville, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Williamsville, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8 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
Williamsville, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Williamsville, IL
- Average sunshine days in August: 14.7 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in August
Williamsville, IL
- 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
Williamsville, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility in August
Williamsville, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Williamsville, Illinois, USA
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