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
Temperature records mark January as the coldest month, with highs averaging 45°F (7.2°C) and lows at 30.7°F (-0.7°C).Humidity
The average relative humidity in January is 76%.Rainfall
In Isom, in January, it is raining for 12.6 days, with typically 3.03" (77mm) of accumulated precipitation. In Isom, Tennessee, during the entire year, the rain falls for 178.7 days and collects up to 39.21" (996mm) of precipitation.Snowfall
Months with snowfall in Isom, Tennessee, are January through April, October through December. The month with the most snowfall in Isom, Tennessee, is January, when snow falls for 3.9 days and typically aggregates up to 0.98" (25mm) of snow.Daylight
In Isom, the average length of the day in January is 10h and 4min.On the first day of the month, sunrise is at 6:58 am and sunset at 4:46 pm. On the last day of January, sunrise is at 6:49 am and sunset at 5:15 pm CST.
Sunshine
In January, the average sunshine in Isom is 4.7h.UV index
January 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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Isom?
What is the temperature in January in Isom?
What is the average humidity in January in Isom?
How much does it rain in Isom in January?
When does it snow the most in Isom?
How many days does it snow in January in Isom?
What is the average length of the day in January in Isom?
What time are sunrise and sunset in January in Isom?
How many hours of sunshine does Isom have in January?
What are the months with the lowest UV index in Isom?
How high is the UV index in January in Isom?
Average temperature in January
Isom, TN
- Average high temperature in January: 45°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in January: 30.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in January
Isom, 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 (29.97"Hg).
Average wind speed in January
Isom, TN
- Average wind speed in January: 8.2mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
Isom, TN
- Average humidity in January: 76%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Isom, TN
- Average rainfall in January: 3.03"
The wettest month (with the highest rainfall) is July (4.21").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in January
Isom, TN
- Average rainfall days in January: 12.6 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in January
Isom, TN
- Average snowfall in January: 0.98"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Isom, TN
- Average snowfall days in January: 3.9 days
The month with the highest number of snowfall days is February (4 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
Isom, 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: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in January
Isom, TN
- Average sunshine days in January: 14.5 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in January
Isom, 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 and December (UV index 2).
Average cloud cover in January
Isom, TN
- Average cloud cover in January: 51
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in January
Isom, TN
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, May, July, August and September (5mi).
Isom, Tennessee, USA
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