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's arrival signals an increase in average high-temperatures, moving from March's chilly 46.4°F (8°C) to a mild 58.3°F (14.6°C). Lyndon's average low-temperature during April nights is observed to be a wintry 42.1°F (5.6°C).Humidity
In Lyndon, the average relative humidity in April is 74%.Rainfall
In Lyndon, in April, during 16.4 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. In Lyndon, during the entire year, the rain falls for 151.5 days and collects up to 30.24" (768mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.3 snowfall days, in April, Lyndon aggregates 0.71" (18mm) of snow. In Lyndon, during the entire year, snow falls for 37.9 days and aggregates up to 15.83" (402mm) of snow.Daylight
In April, the average length of the day is 13h and 22min.On the first day of April, sunrise is at 6:41 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:57 pm CDT.
Sunshine
The average sunshine in April is 7.8h.UV index
The average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during April leads to these advisories:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To avoid the Sun's strongest rays, limit exposure around the mid-day period. 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. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
What is the average length of the day in April?
When are sunrise and sunset in April in Lyndon?
How many hours of sunshine does Lyndon have in April?
What is the UV index intensity in April?
Average temperature in April
Lyndon, IL
- Average high temperature in April: 58.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in April: 42.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in April
Lyndon, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Lyndon, IL
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in April
Lyndon, IL
- Average humidity in April: 74%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Lyndon, IL
- Average rainfall in April: 3.54"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in April
Lyndon, IL
- Average rainfall days in April: 16.4 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in April
Lyndon, IL
- Average snowfall in April: 0.71"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Lyndon, IL
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (10.5 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
Lyndon, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Lyndon, IL
- Average sunshine days in April: 11.4 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in April
Lyndon, IL
- Average UV index in April: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Lyndon, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in April
Lyndon, IL
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Lyndon, Illinois, USA
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