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 moderately hot 79°F (26.1°C), exhibiting minor difference from the previous month. The temperature dips to an average of 62.2°F (16.8°C) during August nights.Humidity
In August, the average relative humidity is 81%.Rainfall
In Sleepy Hollow, in August, during 17 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Sleepy Hollow, there are 149.2 rainfall days, and 24.02" (610mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 50min.On the first day of the month, sunrise is at 5:47 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:28 pm CDT.
Sunshine
In August, the average sunshine is 9.6h.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index in Sleepy Hollow. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Sleepy Hollow?
What is the average humidity in August in Sleepy Hollow?
How many days does it rain in August in Sleepy Hollow?
When it does not snow in Sleepy Hollow?
What is the average length of the day in August in Sleepy Hollow?
When is the sunrise / sunset in August in Sleepy Hollow?
How many hours of sunshine does Sleepy Hollow have in August?
What is the month with the highest UV index in Sleepy Hollow?
How high is the UV index in August in Sleepy Hollow?
Average temperature in August
Sleepy Hollow, IL
- Average high temperature in August: 79°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in August
Sleepy Hollow, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Sleepy Hollow, IL
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in August
Sleepy Hollow, IL
- Average humidity in August: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Sleepy Hollow, IL
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in August
Sleepy Hollow, IL
- Average rainfall days in August: 17 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in August
Sleepy Hollow, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sleepy Hollow, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sleepy Hollow, IL
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 9h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Sleepy Hollow, IL
- Average sunshine days in August: 10.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in August
Sleepy Hollow, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Sleepy Hollow, IL
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in August
Sleepy Hollow, IL
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Sleepy Hollow, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location