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
With an average high-temperature of 39°F (3.9°C) and an average low-temperature of 26.1°F (-3.3°C), January is the coldest month in Jeffersontown.Humidity
In Jeffersontown, the average relative humidity in January is 77%.Rainfall
In Jeffersontown, Kentucky, in January, during 8.4 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 140.3 rainfall days, and 18.31" (465mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Jeffersontown, during January, snow falls for 5.7 days and regularly aggregates up to 0.47" (12mm) of snow. Throughout the year, there are 19.9 snowfall days, and 2.44" (62mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 52min.On the first day of January, sunrise is at 7:58 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 6:03 pm EST.
Sunshine
In Jeffersontown, the average sunshine in January is 4.4h.UV index
The months with the lowest UV index in Jeffersontown are January, February, November 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: A maximum high 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. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Jeffersontown?
Is it cold during January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Jeffersontown have in January?
When is the sunrise / sunset in January?
How many hours of sunshine does Jeffersontown have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Jeffersontown, KY
- Average high temperature in January: 39°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 (39°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in January
Jeffersontown, KY
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Jeffersontown, KY
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in January
Jeffersontown, KY
- Average humidity in January: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (73%).
Average rainfall in January
Jeffersontown, KY
- Average rainfall in January: 1.14"
The wettest months (with the highest rainfall) are April and May (2.05").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in January
Jeffersontown, KY
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in January
Jeffersontown, KY
- Average snowfall in January: 0.47"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Jeffersontown, KY
- Average snowfall days in January: 5.7 days
The month with the highest number of snowfall days is February (5.9 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
Jeffersontown, KY
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in January
Jeffersontown, KY
- Average sunshine days in January: 18.6 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in January
Jeffersontown, KY
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Jeffersontown, KY
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Jeffersontown, KY
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Jeffersontown, Kentucky, USA
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