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

June 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
The first month of the summer, June, is still a warm month in Louisville, Kentucky, with average temperature ranging between min 66°F (18.9°C) and max 85.3°F (29.6°C).

Temperature

In June, the average high-temperature slightly increases, from 77.2°F (25.1°C) in May, to a still warm 85.3°F (29.6°C). In Louisville, Kentucky, the average low-temperature is 66°F (18.9°C).

Heat index

In June, the average heat index is estimated at a hot 92.8°F (33.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, pregnancy, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Louisville, the average relative humidity is 68.9%.

Rainfall

In Louisville, it is raining for 10.3 days, with typically 3.8" (96.3mm) of accumulated precipitation. Throughout the year, there are 122.8 rainfall days, and 44.9" (1140.9mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Louisville.

Daylight

The month with the longest days is June, with an average of 14.8h of daylight.

Sunshine

June has the most sunshine of the year, with an average of 9.6h of sunshine.

UV index

Months with the highest UV index in Louisville are June through August, with an average maximum UV index of 9. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to the UV radiation for the average person.
Note: In June, the average maximum UV index of 9 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in June in Louisville?

In Louisville, Kentucky, in June, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 66°F (18.9°C). In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is estimated at 92.8°F (33.8°C).

What is the average humidity in June in Louisville?

In June, the average relative humidity in Louisville, Kentucky, is 68.9%.

How much does it rain in Louisville in June?

In Louisville, Kentucky, in June, it is raining for 10.3 days, with typically 3.8" (96.3mm) of accumulated precipitation.

When it does not snow in Louisville?

In Louisville snow does not fall in May through September.

When are the longest days in Louisville?

The month with the longest days in Louisville, Kentucky, is June, with an average of 14.8h of daylight.

How many hours of daylight does Louisville have in June?

In Louisville, Kentucky, the average length of the day in June is 14.8h.

What month has the most sunshine in Louisville?

With an average of 9.6h of sunshine, June has the most sunshine of the year in Louisville, Kentucky.

How many hours of sunshine does Louisville have in June?

In June, the average sunshine is 9.6h.

When is the highest UV index in Louisville?

Months with the highest UV index in Louisville, Kentucky, are June through August, with an average maximum UV index of 9.

What is the UV index reading in June in Louisville?

In June, the average daily maximum UV index is 9. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in June - Louisville, KY
  • Average high temperature in June: 85.3°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 June: 66°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 June - Louisville, KY
  • Average humidity in June: 68.9%

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 June - Louisville, KY
  • Average rainfall in June: 3.8"

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 June - Louisville, KY
  • Average rainfall days in June: 10.3 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 June - Louisville, KY
  • Average snowfall in June: 0"

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 June - Louisville, KY
  • Average snowfall days in June: 0 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 June / Average sunshine in June - Louisville, KY
  • Average daylight in June: 14.8h

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 June: 9.6h

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 June - Louisville, KY
  • Average UV index in June: 9

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).