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
In Jeffrey, the month of January is known for its lowest average temperatures, reaching a high of 42.1°F (5.6°C) and a low of 28.8°F (-1.8°C).Humidity
In January, the average relative humidity in Jeffrey is 78%.Rainfall
In Jeffrey, during January, the rain falls for 12.5 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Jeffrey, during the entire year, the rain falls for 182.5 days and collects up to 41.85" (1063mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In January, it is snowing for 6.7 days. Throughout January, 2.36" (60mm) of snow is accumulated. Throughout the year, there are 23.4 snowfall days, and 8.82" (224mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 59min.On the first day of January, sunrise is at 6:55 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 5:07 pm CST.
Sunshine
In January, the average sunshine is 4.4h.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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 2 in January transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. 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 part of the year is the coldest?
Is January cold?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Jeffrey, KY
- Average high temperature in January: 42.1°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 (42.1°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in January
Jeffrey, KY
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Jeffrey, KY
- Average wind speed in January: 7.7mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in January
Jeffrey, KY
- Average humidity in January: 78%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in January
Jeffrey, KY
- Average rainfall in January: 3.15"
The wettest months (with the highest rainfall) are February and July (4.25").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in January
Jeffrey, KY
- Average rainfall days in January: 12.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in January
Jeffrey, KY
- Average snowfall in January: 2.36"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jeffrey, KY
- Average snowfall days in January: 6.7 days
The month with the highest number of snowfall days is January (6.7 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
Jeffrey, KY
- 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 42min).
- Average sunshine in January: 4h and 2min
The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in January
Jeffrey, KY
- Average sunshine days in January: 13.1 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in January
Jeffrey, KY
- 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
Jeffrey, KY
- Average cloud cover in January: 54
The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are June and August (Cloud cover 30).
Average visibility in January
Jeffrey, KY
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
Jeffrey, Kentucky, USA
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