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

January 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
January, the same as December, in Louisville, Kentucky, is another chilly winter month, with average temperature varying between 26.8°F (-2.9°C) and 43°F (6.1°C).

Temperature

January is the coldest month, with an average high-temperature of 43°F (6.1°C) and an average low-temperature of 26.8°F (-2.9°C).

Humidity

In January, the average relative humidity is 68.6%.

Rainfall

In January, the rain falls for 10.4 days. Throughout January, 3.2" (82.3mm) of precipitation is accumulated. In Louisville, during the entire year, the rain falls for 122.8 days and collects up to 44.9" (1140.9mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Louisville, snow falls for 3.6 days, with typically accumulated 3.7" (94mm) of snow. Throughout the year, in Louisville, Kentucky, 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 January is 9.9h.

Sunshine

The average sunshine in Louisville is 4.5h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Louisville?

With an average high-temperature of 43°F (6.1°C) and an average low-temperature of 26.8°F (-2.9°C), January is the coldest month in Louisville, Kentucky.

What is the temperature in January in Louisville?

In Louisville, Kentucky, in January, the average high-temperature is 43°F (6.1°C), and the average low-temperature is 26.8°F (-2.9°C).

What is the average humidity in January in Louisville?

In Louisville, Kentucky, the average relative humidity in January is 68.6%.

How many days does it rain in January in Louisville?

In January, the rain falls for 10.4 days. Throughout January, 3.2" (82.3mm) of precipitation is accumulated.

How many days does it snow in January in Louisville?

In Louisville, Kentucky, in January, during 3.6 snowfall days, 3.7" (94mm) of snow is typically accumulated.

How many hours of daylight does Louisville have in January?

In Louisville, Kentucky, the average length of the day in January is 9.9h.

How long on average sun shines in January in Louisville?

The average sunshine in January in Louisville is 4.5h.

What are the months with the lowest UV index in Louisville?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Louisville.

What is the UV index reading in January in Louisville?

The average daily maximum UV index in January in Louisville, Kentucky, is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Louisville, KY
  • Average high temperature in January: 43°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 January: 26.8°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 January - Louisville, KY
  • Average humidity in January: 68.6%

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 January - Louisville, KY
  • Average rainfall in January: 3.2"

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 January - Louisville, KY
  • Average rainfall days in January: 10.4 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 January - Louisville, KY
  • Average snowfall in January: 3.7"

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 January - Louisville, KY
  • Average snowfall days in January: 3.6 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 January / Average sunshine in January - Louisville, KY
  • Average daylight in January: 9.9h

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 January: 4.5h

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 January - Louisville, KY
  • Average UV index in January: 2

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).