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

May 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 last month of the spring, May, is a moderately hot month in Louisville, Kentucky, with average temperature ranging between min 57°F (13.9°C) and max 77.2°F (25.1°C).

Temperature

In Louisville, the average high-temperature in May slightly increases, from a pleasant 68.7°F (20.4°C) in April, to a moderately hot 77.2°F (25.1°C). In May, the average low-temperature is 57°F (13.9°C).

Humidity

In May, the average relative humidity is 67.2%.

Rainfall

May is the month with the most rainfall. Rain falls for 12.6 days and accumulates 5.3" (133.9mm) of precipitation.

Snowfall

In Louisville snow does not fall in May through September.

Daylight

In May, the average length of the day is 14.3h.

Sunshine

In May, the average sunshine in Louisville is 8.5h.

UV index

In May, the average daily maximum UV index in Louisville, Kentucky, is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 8 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. 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.

What is the temperature in May in Louisville?

In May, in Louisville, the average high-temperature is 77.2°F (25.1°C), and the average low-temperature is 57°F (13.9°C).

What is the average humidity in May in Louisville?

In May, the average relative humidity is 67.2%.

How many days does it rain in May in Louisville?

In Louisville, Kentucky, in May, it is raining for 12.6 days, with typically 5.3" (133.9mm) of accumulated precipitation.

What is the wettest month in Louisville?

The month with the most rainfall in Louisville, Kentucky, is May when the rain falls for 12.6 days and typically aggregates up to 5.3" (133.9mm) of precipitation.

Does it snow in Louisville in May?

In May, it doesn't snow. April is the latest month when it typically snows.

When it does not snow in Louisville?

May through September are months without snowfall in Louisville, Kentucky.

How many hours of daylight does Louisville have in May?

The average length of the day in May in Louisville is 14.3h.

How many hours of sunshine does Louisville have in May?

In May, the average sunshine in Louisville is 8.5h.

How high is the UV index in May in Louisville?

In Louisville, the average daily maximum UV index in May is 8. A UV Index estimate of 8 to 10 represents a very high health risk from unprotected exposure to the UV radiation.
Average temperature in May - Louisville, KY
  • Average high temperature in May: 77.1°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 May: 57°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 May - Louisville, KY
  • Average humidity in May: 67.2%

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 May - Louisville, KY
  • Average rainfall in May: 5.3"

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 May - Louisville, KY
  • Average rainfall days in May: 12.6 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 May - Louisville, KY
  • Average snowfall in May: 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 May - Louisville, KY
  • Average snowfall days in May: 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 May / Average sunshine in May - Louisville, KY
  • Average daylight in May: 14.3h

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 May: 8.5h

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 May - Louisville, KY
  • Average UV index in May: 8

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).