July weather forecastSleepy Hollow, IL
July
Weather in July
July, the same as June, is a moderately hot summer month in Sleepy Hollow, Illinois, with an average temperature ranging between max 80.6°F (27°C) and min 63.9°F (17.7°C).Temperature
Sleepy Hollow, Illinois, experiences its highest average temperatures in July, reaching a peak of 80.6°F (27°C) and a minimum of 63.9°F (17.7°C).Heat index
In July, the heat index is estimated at a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in July is 82%.Rainfall
In Sleepy Hollow, during July, the rain falls for 17.8 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Sleepy Hollow, there are 149.2 rainfall days, and 24.02" (610mm) of precipitation is accumulated.Snowfall
In Sleepy Hollow, Illinois, snow does not fall in June through September.Daylight
In Sleepy Hollow, the average length of the day in July is 14h and 53min.On the first day of the month, sunrise is at 5:21 am and sunset at 8:32 pm. On the last day of July, in Sleepy Hollow, sunrise is at 5:46 am and sunset at 8:12 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 9.8h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Sleepy Hollow, IL
- Average high temperature in July: 80.6°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 July: 63.9°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 July
Sleepy Hollow, IL
- Average pressure in July: 29.97"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 July
Sleepy Hollow, IL
- Average wind speed in July: 6.4mph
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 July
Sleepy Hollow, IL
- Average humidity in July: 82%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in July
Sleepy Hollow, IL
- Average rainfall in July: 2.64"
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 July
Sleepy Hollow, IL
- Average rainfall days in July: 17.8 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 July
Sleepy Hollow, IL
- Average snowfall in July: 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 July
Sleepy Hollow, IL
- Average snowfall days in July: 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 July /
Average sunshine in July
Sleepy Hollow, IL
- Average daylight in July: 14h and 54min
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 July: 9h and 48min
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 July
Sleepy Hollow, IL
- Average sunshine days in July: 10.2 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 July
Sleepy Hollow, IL
- Average UV index in July: 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 July
Sleepy Hollow, IL
- Average cloud cover in July: 34
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 July
Sleepy Hollow, IL
- Average visibility in July: 5mi
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).
