January weather forecast
Rockcastle, KY

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Weather in January

January, like December, in Rockcastle, Kentucky, is another cold winter month, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 42.1°F (5.6°C).

Temperature

Rockcastle's January weather reaches an average high of 42.1°F (5.6°C) and an average low of 28.8°F (-1.8°C), making it the coldest month.

Humidity

In January, the average relative humidity in Rockcastle is 76%.

Rainfall

In Rockcastle, during January, the rain falls for 11.3 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, in Rockcastle, Kentucky, there are 160.8 rainfall days, and 35.79" (909mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Rockcastle are January through April, October through December. In January, in Rockcastle, it is snowing for 4.8 days. Throughout January, 1.34" (34mm) of snow is accumulated. Throughout the year, in Rockcastle, there are 15.6 snowfall days, and 6.54" (166mm) of snow is accumulated.

Daylight

The average length of the day in January in Rockcastle is 9h and 58min.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:45 pm. On the last day of January, in Rockcastle, sunrise is at 6:55 am and sunset at 5:15 pm CST.

Sunshine

The months with the least sunshine in Rockcastle are January and February, with an average of 4.6h of sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

What are the coldest months in Rockcastle?

Rockcastle's January weather, marked by an average high temperature of 42.1°F (5.6°C) and an average low temperature of 28.8°F (-1.8°C), is the coldest in the year.

Is January cold in Rockcastle?

In Rockcastle, 42.1°F (5.6°C) is the average high-temperature and 28.8°F (-1.8°C) is the average low-temperature during January.

What is the average humidity in January in Rockcastle?

In January, the average relative humidity is 76%.

How many days does it rain in January in Rockcastle?

In January, in Rockcastle, the rain falls for 11.3 days. Throughout January, 2.56" (65mm) of precipitation is accumulated.

How much does it snow in Rockcastle in January?

In January, in Rockcastle, it is snowing for 4.8 days. Throughout January, 1.34" (34mm) of snow is accumulated.

What is the average length of the day in January in Rockcastle?

In January, the average day length in Rockcastle is 9h and 58min.

When are sunrise and sunset in January in Rockcastle?

On the first day of January in Rockcastle, sunrise is at 7:04 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 5:15 pm CST.

What is the month with the least sunshine in Rockcastle?

The months with the least sunshine in Rockcastle, Kentucky, are January and February, with an average of 4.6h of sunshine.

How long on average sun shines in January in Rockcastle?

In January, the average sunshine duration in Rockcastle is 4.6h.

What is the month with the lowest UV index in Rockcastle?

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

What is the UV index intensity in January in Rockcastle?

In January, the average daily maximum UV index in Rockcastle, Kentucky, is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Rockcastle, KY

Average temperature in January - Rockcastle, KY
  • Average high temperature in January: 42.1°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in January
Rockcastle, KY

Average pressure in January - Rockcastle, KY
  • Average pressure in January: 30.17"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in January
Rockcastle, KY

Average wind speed in January - Rockcastle, KY
  • Average wind speed in January: 8.8mph

The windiest months (with the highest average wind speed) are February and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in January
Rockcastle, KY

Average humidity in January - Rockcastle, KY
  • Average humidity in January: 76%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Rockcastle, KY

Average rainfall in January - Rockcastle, KY
  • Average rainfall in January: 2.56"

The wettest month (with the highest rainfall) is February (4.45").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in January
Rockcastle, KY

Average rainfall days in January - Rockcastle, KY
  • Average rainfall days in January: 11.3 days

The month with the highest number of rainy days is March (16.4 days).
The month with the least rainy days is November (9.9 days).

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Average snowfall in January
Rockcastle, KY

Average snowfall in January - Rockcastle, KY
  • Average snowfall in January: 1.34"

The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Rockcastle, KY

Average snowfall days in January - Rockcastle, KY
  • Average snowfall days in January: 4.8 days

The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Rockcastle, KY

Average daylight in January / Average sunshine in January - Rockcastle, KY
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Rockcastle, KY

Average sunshine days in January - Rockcastle, KY
  • Average sunshine days in January: 15.5 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is February (11.6 days).

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Average UV index in January
Rockcastle, KY

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

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

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Average cloud cover in January
Rockcastle, KY

Average cloud cover in January - Rockcastle, KY
  • Average cloud cover in January: 51

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

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Average visibility in January
Rockcastle, KY

Average visibility in January - Rockcastle, KY
  • Average visibility in January: 6mi

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

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Rockcastle, Kentucky, USA

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