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
Lerna in April experiences an increase in the average high-temperature, moving from March's cool 51.1°F (10.6°C) to a refreshing 62.2°F (16.8°C). Lerna's temperature lowers to a mean of 46.2°F (7.9°C) during the nights in April.Humidity
In Lerna, the average relative humidity in April is 76%.Rainfall
The month with the most rainfall is April, when the rain falls for 14.9 days and typically aggregates up to 3.31" (84mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Lerna. 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. Throughout the year, there are 26.6 snowfall days, and 7.01" (178mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 16min.On the first day of April in Lerna, 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 Lerna, Illinois, the average sunshine in April is 8h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 4 in April transforms into this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lerna in April?
What is the average humidity in April?
What is the rainiest month?
How many days does it rain in April?
What is the last month it snows?
What is the average length of the day in April in Lerna?
What time are sunrise and sunset in April?
How many hours of sunshine does Lerna have in April?
What is the UV index reading 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
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