December weather forecast and climate
Blue River, KY

The first month of the winter, December, is also a frosty month in Blue River, Kentucky, with average temperature fluctuating between 45.5°F (7.5°C) and 33.1°F (0.6°C).

Temperature

In December, the average high-temperature decreases, from a cool 54.5°F (12.5°C) in November, to a chilly 45.5°F (7.5°C). The average low-temperature, in December, is 33.1°F (0.6°C).

Humidity

The average relative humidity is 79%.

Rainfall

In Blue River, Kentucky, in December, it is raining for 13.5 days, with typically 3.23" (82mm) of accumulated precipitation. In Blue River, during the entire year, the rain falls for 181.8 days and collects up to 33.43" (849mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Blue River. In December, in Blue River, it is snowing for 6.7 days. Throughout December, 3.23" (82mm) of snow is accumulated. Throughout the year, in Blue River, there are 35.7 snowfall days, and 14.09" (358mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.6h of daylight.

Sunshine

In December, the average sunshine in Blue River is 4.6h.

UV index

Months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Blue River?

In December, in Blue River, the average high-temperature is 45.5°F (7.5°C), and the average low-temperature is 33.1°F (0.6°C).

What is the average humidity in December in Blue River?

In Blue River, the average relative humidity in December is 79%.

How many days does it rain in December in Blue River?

In Blue River, Kentucky, in December, it is raining for 13.5 days, with typically 3.23" (82mm) of accumulated precipitation.

How many days does it snow in December in Blue River?

In Blue River, Kentucky, in December, snow falls for 6.7 days, with typically accumulated 3.23" (82mm) of snow.

What is the month with the shortest days in Blue River?

With an average of 9.6h of daylight, December has the shortest days of the year in Blue River.

What is the average length of the day in December in Blue River?

The average length of the day in December in Blue River, Kentucky, is 9.6h.

How long on average sun shines in December in Blue River?

In Blue River, the average sunshine in December is 4.6h.

What are the months with the lowest UV index in Blue River?

Months with the lowest UV index in Blue River, Kentucky, are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Blue River?

In Blue River, Kentucky, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in December - Blue River, KY
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in December - Blue River, KY
  • Average pressure in December: 30.14"

Months with the highest atmospheric pressure are January and November (30.16").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in December - Blue River, KY
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity in December - Blue River, KY
  • Average humidity in December: 79%

The month with the highest relative humidity is February (80%).
Months with the lowest relative humidity are August and November (74%).

Average rainfall in December - Blue River, KY
  • Average rainfall in December: 3.23"

The wettest month (with the highest rainfall) is February (3.66").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December - Blue River, KY
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (11.4 days).

Average snowfall in December - Blue River, KY
  • Average snowfall in December: 3.23"

The month with the highest snowfall is January (3.62").
Months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December - Blue River, KY
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (11.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Blue River, KY
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 4.6h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.2h).

Average sunshine days in December - Blue River, KY
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is October (16.1 days).
The month with the least sunshine days is February (8.3 days).

Average UV index in December - Blue River, KY
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December - Blue River, KY
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in December - Blue River, KY
  • Average visibility in December: 5mi

Months with the highest visibility are April, June, October and November (6mi).
Months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).