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 onset brings a temperature rise, moving from a fresh 53.2°F (11.8°C) in March to an enjoyable 64.4°F (18°C). In Louisville, the average low-temperature during the month of April is a chilly 47.5°F (8.6°C).Humidity
The average relative humidity in April in Louisville, Illinois, is 77%.Rainfall
April is the month with the most rainfall in Louisville. Rain falls for 15.7 days and accumulates 4.88" (124mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Louisville. April is the last month it regularly snows in Louisville. During 0.7 snowfall days, in April, Louisville aggregates 0.12" (3mm) of snow. In Louisville, during the entire year, snow falls for 22.8 days and aggregates up to 7.09" (180mm) of snow.Daylight
The average length of the day in April in Louisville is 13h and 14min.On the first day of April, sunrise is at 6:37 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:45 pm CDT.
Sunshine
In Louisville, the average sunshine in April is 8.4h.UV index
In Louisville, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Louisville?
What is the average humidity in April in Louisville?
What is the wettest month in Louisville?
How much does it rain in Louisville in April?
What is the last month it snows in Louisville?
What is the average length of the day in April in Louisville?
When are sunrise and sunset in April in Louisville?
How many hours of sunshine does Louisville have in April?
What is the UV index reading in April in Louisville?
Average temperature in April
Louisville, IL
- Average high temperature in April: 64.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in April: 47.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in April
Louisville, IL
- Average pressure in April: 29.95"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
Louisville, IL
- Average wind speed in April: 9.8mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Louisville, IL
- Average humidity in April: 77%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Louisville, IL
- Average rainfall in April: 4.88"
The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").
Average rainfall days in April
Louisville, IL
- Average rainfall days in April: 15.7 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in April
Louisville, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Louisville, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (7.1 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
Louisville, 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 30min).
- Average sunshine in April: 8h and 2min
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 24min).
Average sunshine days in April
Louisville, IL
- Average sunshine days in April: 12 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).
Average UV index in April
Louisville, IL
- Average UV index in April: 4
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
Louisville, IL
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in April
Louisville, 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).
Louisville, Illinois, USA
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