Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the onset of April, Sleepy Hollow's average high-temperature sees a rise, moving from March's frosty 44.2°F (6.8°C) to a moderate 55.4°F (13°C). Sleepy Hollow experiences an average low-temperature of 39.7°F (4.3°C) in month of April.Humidity
The average relative humidity in April in Sleepy Hollow is 76%.Rainfall
In Sleepy Hollow, in April, it is raining for 15.9 days, with typically 2.8" (71mm) of accumulated precipitation. In Sleepy Hollow, during the entire year, the rain falls for 149.2 days and collects up to 24.02" (610mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Sleepy Hollow, in April, snow falls for 2.1 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, there are 47.4 snowfall days, and 13.07" (332mm) of snow is accumulated.Daylight
In Sleepy Hollow, the average length of the day in April is 13h and 23min.On the first day of April, sunrise is at 6:34 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:51 pm CDT.
Sunshine
In April, the average sunshine in Sleepy Hollow is 7.4h.UV index
In Sleepy Hollow, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In April, a daily maximum UV index of 3 leads to the following instructions:
Heed the precautions - It is counselled to guard against solar damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the average April temperature in Sleepy Hollow?
What is the average humidity in April in Sleepy Hollow?
How much does it rain in Sleepy Hollow in April?
How much does it snow in Sleepy Hollow in April?
What is the average length of the day in April in Sleepy Hollow?
When is the sunrise / sunset in April in Sleepy Hollow?
How long on average sun shines in April in Sleepy Hollow?
How high is the UV index in April in Sleepy Hollow?
Average temperature in April
Sleepy Hollow, IL
- Average high temperature in April: 55.4°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 April: 39.7°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 April
Sleepy Hollow, IL
- Average pressure in April: 29.95"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 April
Sleepy Hollow, IL
- Average wind speed in April: 9.8mph
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 April
Sleepy Hollow, IL
- Average humidity in April: 76%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in April
Sleepy Hollow, IL
- Average rainfall in April: 2.8"
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 April
Sleepy Hollow, IL
- Average rainfall days in April: 15.9 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 April
Sleepy Hollow, IL
- Average snowfall in April: 1.89"
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 April
Sleepy Hollow, IL
- Average snowfall days in April: 2.1 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 April /
Average sunshine in April
Sleepy Hollow, IL
- Average daylight in April: 13h and 2min
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 April: 7h and 2min
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 April
Sleepy Hollow, IL
- Average sunshine days in April: 10.7 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 April
Sleepy Hollow, IL
- Average UV index in April: 3
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 April
Sleepy Hollow, IL
- Average cloud cover in April: 51
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 April
Sleepy Hollow, IL
- Average visibility in April: 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
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