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
Roanoke, Illinois, sees an increase in average high-temperatures during April, moving from a chilly 48.2°F (9°C) in March to a mild 60.4°F (15.8°C). The average temperature drops to a chilly 44.2°F (6.8°C) during the night in the month of April.Humidity
In April, the average relative humidity in Roanoke is 74%.Rainfall
In Roanoke, in April, during 15.5 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Roanoke, during the entire year, the rain falls for 147.1 days and collects up to 24.17" (614mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Roanoke. During 1.3 snowfall days, in April, Roanoke aggregates 1.38" (35mm) of snow. In Roanoke, during the entire year, snow falls for 34.9 days and aggregates up to 11.65" (296mm) of snow.Daylight
In April, the average length of the day is 13h and 20min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:22 pm. On the last day of April, in Roanoke, sunrise is at 5:55 am and sunset at 7:52 pm CDT.
Sunshine
In Roanoke, the average sunshine in April is 8.1h.UV index
In Roanoke, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during April translates into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Roanoke?
What is the average humidity in April in Roanoke?
How many days does it rain in April in Roanoke?
What is the last month it snows in Roanoke?
How many hours of daylight does Roanoke have in April?
When is the sunrise / sunset in April in Roanoke?
How many hours of sunshine does Roanoke have in April?
How high is the UV index in April in Roanoke?
Average temperature in April
Roanoke, IL
- Average high temperature in April: 60.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in April: 44.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in April
Roanoke, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Roanoke, IL
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in April
Roanoke, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Roanoke, IL
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.22").
Average rainfall days in April
Roanoke, IL
- Average rainfall days in April: 15.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in April
Roanoke, IL
- Average snowfall in April: 1.38"
The months with the highest snowfall are January and February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Roanoke, IL
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Roanoke, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Roanoke, IL
- Average sunshine days in April: 11.6 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9 days).
Average UV index in April
Roanoke, IL
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Roanoke, IL
- Average cloud cover in April: 46
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in April
Roanoke, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Roanoke, Illinois, USA
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