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
April sees a rise in the average high-temperature, climbing from a cool 53.1°F (11.7°C) in March to a comfortable 63.7°F (17.6°C). Vandalia reports a consistent average low-temperature of 46.6°F (8.1°C) throughout April nights.Humidity
The average relative humidity in April is 77%.Rainfall
In Vandalia, in April, during 15.9 rainfall days, 4.21" (107mm) of precipitation is typically accumulated. In Vandalia, during the entire year, the rain falls for 164.1 days and collects up to 36.73" (933mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Vandalia. April is the last month it regularly snows. During 0.5 snowfall days, in April, Vandalia aggregates 0.08" (2mm) of snow. In Vandalia, during the entire year, snow falls for 25.1 days and aggregates up to 8.19" (208mm) of snow.Daylight
The average length of the day in April is 13h and 15min.On the first day of April in Vandalia, sunrise is at 6:39 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:48 pm CDT.
Sunshine
In Vandalia, the average sunshine in April is 8.1h.UV index
In Vandalia, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 4 in April leads to these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. 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 is the average April temperature?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Vandalia have in April?
When are sunrise and sunset in April in Vandalia?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Vandalia, IL
- Average high temperature in April: 63.7°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in April: 46.6°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in April
Vandalia, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Vandalia, IL
- Average wind speed in April: 9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Vandalia, IL
- Average humidity in April: 77%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Vandalia, IL
- Average rainfall in April: 4.21"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in April
Vandalia, IL
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in April
Vandalia, IL
- Average snowfall in April: 0.08"
The month with the highest snowfall is December (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Vandalia, IL
- Average snowfall days in April: 0.5 days
The month with the highest number of snowfall days is January (8.3 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
Vandalia, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Vandalia, IL
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in April
Vandalia, IL
- Average UV index in April: 4
The months with the highest UV index are 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
Vandalia, IL
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July and September (Cloud cover 30).
Average visibility in April
Vandalia, 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).
Vandalia, Illinois, USA
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