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
The arrival of April brings a temperature shift, with the average high-temperature escalating from a fresh 51.1°F (10.6°C) in March to a refreshing 62.2°F (16.8°C). In Lerna, the expected average low-temperature for April is a chilly 46.2°F (7.9°C).Humidity
In Lerna, the average relative humidity in April is 76%.Rainfall
April is the month with the most rainfall in Lerna, Illinois. Rain falls for 14.9 days and accumulates 3.31" (84mm) of precipitation.Snowfall
Months with snowfall in Lerna, Illinois, are January through April, October through December. April is the last month it regularly snows in Lerna, Illinois. During 0.7 snowfall days, in April, Lerna aggregates 0.08" (2mm) of snow. In Lerna, during the entire year, snow falls for 26.6 days and aggregates up to 7.01" (178mm) of snow.Daylight
The average length of the day in April in Lerna is 13h and 16min.On the first day of April, sunrise is at 6:36 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 7:46 pm CDT.
Sunshine
In April, the average sunshine is 8h.UV index
The average daily maximum UV index in April in Lerna is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during April translates into the following directions:
Act with care - The need to guard against sun damage is communicated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the average April temperature in Lerna?
What is the average humidity in April in Lerna?
What is the wettest month in Lerna?
How much does it rain in Lerna in April?
What is the last month it snows in Lerna?
How many hours of daylight does Lerna have in April?
When are sunrise and sunset in April in Lerna?
How many hours of sunshine does Lerna have in April?
What is the UV index intensity in April in Lerna?
Average temperature in April
Lerna, IL
- Average high temperature in April: 62.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in April: 46.2°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in April
Lerna, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Lerna, IL
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in April
Lerna, IL
- Average humidity in April: 76%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Lerna, IL
- Average rainfall in April: 3.31"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days in April
Lerna, IL
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in April
Lerna, IL
- Average snowfall in April: 0.08"
The month with the highest snowfall is December (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Lerna, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (8.1 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
Lerna, 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 24min).
- Average sunshine in April: 8h and 0min
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 0min).
Average sunshine days in April
Lerna, IL
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in April
Lerna, IL
- Average UV index in April: 4
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
Lerna, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in April
Lerna, 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).
Lerna, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
