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, Riverwoods sees a temperature rise, with the average high-temperature moving from March's icy 42.6°F (5.9°C) to a fresh 52.9°F (11.6°C). In April, Riverwoods reports a consistent average low-temperature of 39.7°F (4.3°C) during the nights.Humidity
In Riverwoods, the average relative humidity in April is 75%.Rainfall
In Riverwoods, during April, the rain falls for 14.8 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Riverwoods, during the entire year, the rain falls for 143.1 days and collects up to 26.97" (685mm) of precipitation.Snowfall
Months with snowfall in Riverwoods are January through May, October through December. In Riverwoods, in April, during 1.9 snowfall days, 2.36" (60mm) of snow is typically accumulated. In Riverwoods, during the entire year, snow falls for 48.6 days and aggregates up to 18.78" (477mm) of snow.Daylight
The average length of the day in April is 13h and 23min.On the first day of April, sunrise is at 6:32 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April in Riverwoods is 7.7h.UV index
In April, the average daily maximum UV index in Riverwoods, Illinois, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during April leads to these advisories:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Riverwoods?
What is the average humidity in April in Riverwoods?
How many days does it rain in April in Riverwoods?
How many days does it snow in April in Riverwoods?
How many hours of daylight does Riverwoods have in April?
What time are sunrise and sunset in April in Riverwoods?
How many hours of sunshine does Riverwoods have in April?
What is the UV index intensity in April in Riverwoods?
Average temperature in April
Riverwoods, IL
- Average high temperature in April: 52.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in April
Riverwoods, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Riverwoods, IL
- Average wind speed in April: 10.2mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in April
Riverwoods, IL
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Riverwoods, IL
- Average rainfall in April: 3.23"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in April
Riverwoods, IL
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in April
Riverwoods, IL
- Average snowfall in April: 2.36"
The months with the highest snowfall are January and February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Riverwoods, IL
- Average snowfall days in April: 1.9 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Riverwoods, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Riverwoods, IL
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in April
Riverwoods, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Riverwoods, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Riverwoods, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Riverwoods, Illinois, USA
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