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
As April begins, there is an increase in the average high-temperature, moving from a chilly 42.8°F (6°C) in March to a cool 53.6°F (12°C). Round Lake Heights observes an average low-temperature of 38.8°F (3.8°C) during April nights.Humidity
In April, the average relative humidity is 76%.Rainfall
April is the month with the most rainfall in Round Lake Heights. Rain falls for 14.8 days and accumulates 2.72" (69mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Round Lake Heights, Illinois, during April, snow falls for 2.5 days and regularly aggregates up to 1.61" (41mm) of snow. In Round Lake Heights, Illinois, during the entire year, snow falls for 49.5 days and aggregates up to 13.54" (344mm) of snow.Daylight
The average length of the day in April in Round Lake Heights is 13h and 24min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:47 am and sunset at 7:51 pm CDT.
Sunshine
The average sunshine in April in Round Lake Heights is 7.6h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 3 during April translates into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Round Lake Heights?
What is the average humidity in April in Round Lake Heights?
What is the wettest month in Round Lake Heights?
How much does it rain in Round Lake Heights in April?
How much does it snow in Round Lake Heights in April?
What is the average length of the day in April in Round Lake Heights?
When are sunrise and sunset in April in Round Lake Heights?
How long on average sun shines in April in Round Lake Heights?
What is the UV index intensity in April in Round Lake Heights?
Average temperature in April
Round Lake Heights, IL
- Average high temperature in April: 53.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in April
Round Lake Heights, IL
- Average pressure in April: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Round Lake Heights, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Round Lake Heights, IL
- Average humidity in April: 76%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in April
Round Lake Heights, IL
- Average rainfall in April: 2.72"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in April
Round Lake Heights, IL
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in April
Round Lake Heights, IL
- Average snowfall in April: 1.61"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Round Lake Heights, IL
- Average snowfall days in April: 2.5 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Round Lake Heights, 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 6min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Round Lake Heights, IL
- Average sunshine days in April: 11.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in April
Round Lake Heights, 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
Round Lake Heights, IL
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in April
Round Lake Heights, IL
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Round Lake Heights, Illinois, USA
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