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 average temperatures fluctuating between a high of 40.1°F (4.5°C) and a low of 27.5°F (-2.5°C), January stands out as the coldest month.Humidity
The average relative humidity in January in Sullivan is 77%.Rainfall
In January, the rain falls for 8.2 days. Throughout January, 1.46" (37mm) of precipitation is accumulated. In Sullivan, during the entire year, the rain falls for 136.4 days and collects up to 20" (508mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Sullivan. The month with the most snowfall in Sullivan is January, when snow falls for 4.4 days and typically aggregates up to 0.79" (20mm) of snow.Daylight
In Sullivan, the average length of the day in January is 9h and 56min.On the first day of the month, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of January, in Sullivan, Kentucky, sunrise is at 6:56 am and sunset at 5:14 pm CST.
Sunshine
With an average of 4.5h of sunshine, January has the least sunshine of the year in Sullivan, Kentucky.UV index
The months with the lowest UV index in Sullivan are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Sullivan?
How cold does it get in Sullivan in January?
What is the average humidity in January in Sullivan?
How much does it rain in Sullivan in January?
What is the snowiest month in Sullivan?
How much does it snow in Sullivan in January?
What is the average length of the day in January in Sullivan?
When are sunrise and sunset in January in Sullivan?
What is the month with the least sunshine in Sullivan?
How many hours of sunshine does Sullivan have in January?
When is the lowest UV index in Sullivan?
What is the UV index intensity in January in Sullivan?
Average temperature in January
Sullivan, KY
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in January: 27.5°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in January
Sullivan, 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 (29.95"Hg).
Average wind speed in January
Sullivan, KY
- Average wind speed in January: 9.7mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in January
Sullivan, KY
- Average humidity in January: 77%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Sullivan, KY
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in January
Sullivan, KY
- Average rainfall days in January: 8.2 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in January
Sullivan, KY
- Average snowfall in January: 0.79"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Sullivan, KY
- Average snowfall days in January: 4.4 days
The month with the highest number of snowfall days is January (4.4 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
Sullivan, KY
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Sullivan, KY
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in January
Sullivan, 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
Sullivan, KY
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in January
Sullivan, KY
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Sullivan, Kentucky, USA
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