Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, having an average high-temperature of 46.4°F (8°C) and an average low-temperature of 30.9°F (-0.6°C), is the coldest month.Humidity
The average relative humidity in January in Mountainbrook, Tennessee, is 76%.Rainfall
In January, in Mountainbrook, the rain falls for 10.7 days. Throughout January, 1.69" (43mm) of precipitation is accumulated. In Mountainbrook, during the entire year, the rain falls for 148 days and collects up to 23.9" (607mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Mountainbrook. In Mountainbrook, in January, during 1.4 snowfall days, 0.55" (14mm) of snow is typically accumulated. Throughout the year, in Mountainbrook, there are 5.2 snowfall days, and 1.77" (45mm) of snow is accumulated.Daylight
The average length of the day in January is 10h and 6min.On the first day of January in Mountainbrook, Tennessee, sunrise is at 7:48 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 6:06 pm EST.
Sunshine
In Mountainbrook, the average sunshine in January is 5.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Mountainbrook. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Mountainbrook?
What is the average January temperature in Mountainbrook?
What is the average humidity in January in Mountainbrook?
How many days does it rain in January in Mountainbrook?
How much does it snow in Mountainbrook in January?
What is the average length of the day in January in Mountainbrook?
When is the sunrise / sunset in January in Mountainbrook?
How long on average sun shines in January in Mountainbrook?
What is the month with the lowest UV index in Mountainbrook?
How high is the UV index in January in Mountainbrook?
Average temperature in January
Mountainbrook, TN
- Average high temperature in January: 46.4°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in January: 30.9°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in January
Mountainbrook, 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 (29.98"Hg).
Average wind speed in January
Mountainbrook, TN
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Mountainbrook, TN
- Average humidity in January: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, July, August, September, October and November (75%).
Average rainfall in January
Mountainbrook, TN
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is July (2.64").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in January
Mountainbrook, TN
- Average rainfall days in January: 10.7 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in January
Mountainbrook, TN
- Average snowfall in January: 0.55"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Mountainbrook, TN
- Average snowfall days in January: 1.4 days
The month with the highest number of snowfall days is February (1.7 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
Mountainbrook, TN
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Mountainbrook, TN
- Average sunshine days in January: 19.1 days
The months with the most sunshine days are October and November (21.2 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in January
Mountainbrook, 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
Mountainbrook, TN
- Average cloud cover in January: 46
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in January
Mountainbrook, TN
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, May and December (5mi).
Mountainbrook, Tennessee, USA
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