Louisville
Kentucky, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Louisville, KY

A distant view of the Louisville city, Kentucky, from across the bridge, at dusk, reflected in the water below
A distant view of the Louisville city, Kentucky, from across the bridge, at dusk, reflected in the water below
April in Louisville, Kentucky, is a pleasant spring month, with average temperature varying between 68.7°F (20.4°C) and 47.3°F (8.5°C).

Temperature

In April, the average high-temperature increases, from a mild 57.9°F (14.4°C) in March, to a pleasant 68.7°F (20.4°C). In April, in Louisville, the average low-temperature is 47.3°F (8.5°C).

Humidity

With an average relative humidity of 61.5%, April is the least humid month.

Rainfall

In Louisville, it is raining for 11.7 days, with typically 4" (101.9mm) of accumulated precipitation. Throughout the year, there are 122.8 rainfall days, and 44.9" (1140.9mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Louisville, Kentucky. April is the last month it regularly snows. During 0.1 snowfall days, in April, Louisville aggregates 0.1" (2.5mm) of snow. Throughout the year, there are 11.8 snowfall days, and 12.5" (317.4mm) of snow is accumulated.

Daylight

In Louisville, the average length of the day in April is 13.2h.

Sunshine

The average sunshine in Louisville is 7.4h.

UV index

In Louisville, the average daily maximum UV index in April is 7. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in April in Louisville?

The average high-temperature, in April, is 68.7°F (20.4°C), while the average low-temperature is 47.3°F (8.5°C).

What is the least humid month in Louisville?

April is the least humid month in Louisville, Kentucky, with an average relative humidity of 61.5%.

What is the average humidity in April in Louisville?

In Louisville, Kentucky, the average relative humidity in April is 61.5%.

How much does it rain in Louisville in April?

In Louisville, in April, during 11.7 rainfall days, 4" (101.9mm) of precipitation is typically accumulated.

What is the last month it snows in Louisville?

April is the last month it regularly snows. During 0.1 snowfall days, in April, Louisville aggregates 0.1" (2.5mm) of snow.

What is the average length of the day in April in Louisville?

The average length of the day in April is 13.2h.

How many hours of sunshine does Louisville have in April?

The average sunshine in April in Louisville is 7.4h.

How high is the UV index in April in Louisville?

In Louisville, the average daily maximum UV index in April is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in April - Louisville, KY
  • Average high temperature in April: 68.8°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (43°F).

  • Average low temperature in April: 47.3°F

The month with the highest average low temperature is July (69.9°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average humidity in April - Louisville, KY
  • Average humidity in April: 61.5%

The month with the highest relative humidity is September (72.9%).
The month with the lowest relative humidity is April (61.5%).

Average rainfall in April - Louisville, KY
  • Average rainfall in April: 4"

The wettest month (with the highest rainfall) is May (5.3").
The driest month (with the lowest rainfall) is September (3.1").

Average rainfall days in April - Louisville, KY
  • Average rainfall days in April: 11.7 days

The month with the highest number of rainy days is May (12.6 days).
The month with the lowest number of rainy days is October (7.7 days).

Average snowfall in April - Louisville, KY
  • Average snowfall in April: 0.1"

The month with the highest snowfall is February (4.5").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in April - Louisville, KY
  • Average snowfall days in April: 0.1 days

Months with the highest number of snowfall days are January and February (3.6 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Louisville, KY
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in April: 7.4h

The month with most sunshine is June (Average sunshine: 9.6h).
The month with least sunshine is December (Average sunshine: 3.8h).

Average UV index in April - Louisville, KY
  • Average UV index in April: 7

Months with the highest UV index are June, July and August (UV index 9).
Months with the lowest UV index are January and December (UV index 2).