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
Grayville's April weather brings a rise in high-temperatures, moving from a cool 54.1°F (12.3°C) in March to a refreshing 65.3°F (18.5°C). In Grayville, April nights witness a steady temperature drop to a chilly 48.7°F (9.3°C).Humidity
In April, the average relative humidity in Grayville, Illinois, is 77%.Rainfall
April is the month with the most rainfall. Rain falls for 16.7 days and accumulates 5.2" (132mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Grayville. April is the last month it regularly snows. During 0.4 snowfall days, in April, Grayville aggregates 0.2" (5mm) of snow. In Grayville, during the entire year, snow falls for 20.5 days and aggregates up to 6.06" (154mm) of snow.Daylight
The average length of the day in April is 13h and 13min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:15 pm. On the last day of April, in Grayville, sunrise is at 5:55 am and sunset at 7:42 pm CDT.
Sunshine
In Grayville, the average sunshine in April is 8.5h.UV index
In Grayville, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 during April translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grayville in April?
What is the average humidity in April in Grayville?
What is the rainiest month in Grayville?
How much does it rain in Grayville in April?
What is the last month it snows in Grayville?
What is the average length of the day in April in Grayville?
When are sunrise and sunset in April in Grayville?
How long on average sun shines in April in Grayville?
How high is the UV index in April in Grayville?
Average temperature in April
Grayville, IL
- Average high temperature in April: 65.3°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in April: 48.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in April
Grayville, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Grayville, IL
- Average wind speed in April: 9.9mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in April
Grayville, IL
- Average humidity in April: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Grayville, IL
- Average rainfall in April: 5.2"
The wettest month (with the highest rainfall) is April (5.2").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in April
Grayville, IL
- Average rainfall days in April: 16.7 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in April
Grayville, IL
- Average snowfall in April: 0.2"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Grayville, IL
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is January (6.6 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
Grayville, IL
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Grayville, IL
- Average sunshine days in April: 11.4 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in April
Grayville, IL
- Average UV index in April: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Grayville, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in April
Grayville, 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).
Grayville, Illinois, USA
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