January weather forecast
Rock Castle, TN

Share

Weather in January

January, the same as December, in Rock Castle, Tennessee, is another chilly winter month, with an average temperature varying between 43.9°F (6.6°C) and 29.7°F (-1.3°C).

Temperature

In Rock Castle, January is the coldest month, with temperatures averaging a high of 43.9°F (6.6°C) and a low of 29.7°F (-1.3°C).

Humidity

The average relative humidity in January is 77%.

Rainfall

In January, the rain falls for 12.2 days. Throughout January, 2.87" (73mm) of precipitation is accumulated. Throughout the year, in Rock Castle, there are 170.4 rainfall days, and 37.99" (965mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In January, in Rock Castle, Tennessee, it is snowing for 3.9 days. Throughout January, 1.34" (34mm) of snow is accumulated. In Rock Castle, during the entire year, snow falls for 13.4 days and aggregates up to 4.29" (109mm) of snow.

Daylight

In January, the average length of the day is 10h and 2min.
On the first day of January in Rock Castle, sunrise is at 6:53 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 5:07 pm CST.

Sunshine

In January, the average sunshine in Rock Castle is 4.6h.

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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 during January translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Rock Castle?

With an average high-temperature of 43.9°F (6.6°C) and an average low-temperature of 29.7°F (-1.3°C), January is the coldest month in Rock Castle.

How cold is January in Rock Castle?

An average high-temperature, in January, in Rock Castle, is 43.9°F (6.6°C) and the average low-temperature is 29.7°F (-1.3°C).

What is the average humidity in January in Rock Castle?

The average relative humidity in January in Rock Castle, Tennessee, is 77%.

How many days does it rain in January in Rock Castle?

In January, in Rock Castle, Tennessee, the rain falls for 12.2 days. Throughout January, 2.87" (73mm) of precipitation is accumulated.

How many days does it snow in January in Rock Castle?

In Rock Castle, Tennessee, in January, during 3.9 snowfall days, 1.34" (34mm) of snow is typically accumulated.

How many hours of daylight does Rock Castle have in January?

In January, the average day length is 10h and 2min.

When are sunrise and sunset in January in Rock Castle?

On the first day of January in Rock Castle, sunrise is at 6:53 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 5:07 pm CST.

How many hours of sunshine does Rock Castle have in January?

The average sunshine duration in January in Rock Castle, Tennessee, is 4.6h.

What is the month with the lowest UV index in Rock Castle?

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

How high is the UV index in January in Rock Castle?

In Rock Castle, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from 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
Rock Castle, TN

Average temperature in January - Rock Castle, TN
  • Average high temperature in January: 43.9°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (43.9°F).

  • Average low temperature in January: 29.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in January
Rock Castle, TN

Average pressure in January - Rock Castle, TN
  • Average pressure in January: 30.16"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in January
Rock Castle, TN

Average wind speed in January - Rock Castle, TN
  • Average wind speed in January: 7mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in January
Rock Castle, TN

Average humidity in January - Rock Castle, TN
  • Average humidity in January: 77%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (75%).

Average rainfall in January
Rock Castle, TN

Average rainfall in January - Rock Castle, TN
  • Average rainfall in January: 2.87"

The wettest month (with the highest rainfall) is February (4.09").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in January
Rock Castle, TN

Average rainfall days in January - Rock Castle, TN
  • Average rainfall days in January: 12.2 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in January
Rock Castle, TN

Average snowfall in January - Rock Castle, TN
  • Average snowfall in January: 1.34"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Rock Castle, TN

Average snowfall days in January - Rock Castle, TN
  • Average snowfall days in January: 3.9 days

The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Rock Castle, TN

Average daylight in January / Average sunshine in January - Rock Castle, TN
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in January
Rock Castle, TN

Average sunshine days in January - Rock Castle, TN
  • Average sunshine days in January: 16.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in January
Rock Castle, TN

Average UV index in January - Rock Castle, TN
  • 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).

Average cloud cover in January
Rock Castle, TN

Average cloud cover in January - Rock Castle, TN
  • Average cloud cover in January: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in January
Rock Castle, TN

Average visibility in January - Rock Castle, TN
  • Average visibility in January: 5mi

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

Rock Castle, Tennessee, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location