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

July 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
July in Louisville, Kentucky, is a hot summer month, with temperature in the range of an average low of 70°F (21.1°C) and an average high of 88.7°F (31.5°C).

Temperature

The warmest month is July, with an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 70°F (21.1°C).

Heat index

The average heat index is appraised at a torrid 102.7°F (39.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in July is 70.9%.

Rainfall

In Louisville, Kentucky, during July, the rain falls for 10 days and regularly aggregates up to 4.2" (107.4mm) of precipitation. Throughout the year, there are 122.8 rainfall days, and 44.9" (1140.9mm) of precipitation is accumulated.

Snowfall

In Louisville snow does not fall in May through September.

Daylight

In July, the average length of the day in Louisville, Kentucky, is 14.5h.

Sunshine

In July, the average sunshine in Louisville is 9.5h.

UV index

June through August, with an average maximum UV index of 9, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 9 transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. 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 warmest month in Louisville?

The warmest month in Louisville, Kentucky, is July, with an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 70°F (21.1°C).

What is the temperature in July in Louisville?

The average high-temperature, in July, in Louisville, is 88.7°F (31.5°C), while the average low-temperature is 70°F (21.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines relative humidity and air temperature, in July is estimated at 102.7°F (39.3°C).

What is the average humidity in July in Louisville?

In July, the average relative humidity in Louisville is 70.9%.

How much does it rain in Louisville in July?

In Louisville, Kentucky, in July, it is raining for 10 days, with typically 4.2" (107.4mm) of accumulated precipitation.

When it does not snow in Louisville?

In Louisville, Kentucky, snow does not fall in May through September.

How many hours of daylight does Louisville have in July?

In July, the average length of the day in Louisville is 14.5h.

How many hours of sunshine does Louisville have in July?

In July, the average sunshine in Louisville is 9.5h.

When is the highest UV index in Louisville?

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

What is the UV index intensity in July in Louisville?

In Louisville, Kentucky, the average daily maximum UV index in July is 9. A UV Index value of 8 to 10 symbolizes a very high health threat from the exposure to the Sun's UV rays.
Average temperature in July - Louisville, KY
  • Average high temperature in July: 88.7°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 July: 69.9°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 July - Louisville, KY
  • Average humidity in July: 70.9%

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 July - Louisville, KY
  • Average rainfall in July: 4.2"

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 July - Louisville, KY
  • Average rainfall days in July: 10 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 July - Louisville, KY
  • Average snowfall in July: 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 July - Louisville, KY
  • Average snowfall days in July: 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 July / Average sunshine in July - Louisville, KY
  • Average daylight in July: 14.5h

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 July: 9.5h

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 July - Louisville, KY
  • Average UV index in July: 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).