January weather forecastSignal Mountain, TN
January
Weather in January
January, the same as December, in Signal Mountain, Tennessee, is a frosty winter month, with an average temperature varying between 45.1°F (7.3°C) and 30.6°F (-0.8°C).Temperature
January, with an average high of 45.1°F (7.3°C) and a low of 30.6°F (-0.8°C), signifies the coldest month of the year.Humidity
The average relative humidity in January is 77%.Rainfall
In Signal Mountain, in January, it is raining for 13.8 days, with typically 3.66" (93mm) of accumulated precipitation. Throughout the year, there are 187.2 rainfall days, and 44.09" (1120mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Signal Mountain, in January, during 5.2 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Signal Mountain, during the entire year, snow falls for 17.1 days and aggregates up to 5.08" (129mm) of snow.Daylight
In January, the average length of the day is 10h and 7min.On the first day of January, sunrise is at 7:49 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 6:08 pm EST.
Sunshine
The average sunshine in January is 5.3h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the UV index of 2 transforms into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Signal Mountain, TN
- Average high temperature in January: 45.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in January: 30.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in January
Signal Mountain, TN
- 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 (29.98"Hg).
Average wind speed in January
Signal Mountain, TN
- Average wind speed in January: 6.2mph
The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Signal Mountain, TN
- Average humidity in January: 77%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are June, July, August, September, October and November (76%).
Average rainfall in January
Signal Mountain, TN
- Average rainfall in January: 3.66"
The wettest month (with the highest rainfall) is December (4.53").
The driest month (with the least rainfall) is September (2.76").
Average rainfall days in January
Signal Mountain, TN
- Average rainfall days in January: 13.8 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in January
Signal Mountain, TN
- Average snowfall in January: 1.14"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Signal Mountain, TN
- Average snowfall days in January: 5.2 days
The month with the highest number of snowfall days is January (5.2 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
Signal Mountain, TN
- Average daylight in January: 10h and 6min
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 18min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in January
Signal Mountain, TN
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (7.7 days).
Average UV index in January
Signal Mountain, 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
Signal Mountain, TN
- Average cloud cover in January: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in January
Signal Mountain, TN
- Average visibility in January: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
