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 37°F (2.8°C) and lows at 24.6°F (-4.1°C).Humidity
In Williamstown, the average relative humidity in January is 79%.Rainfall
In Williamstown, in January, during 10.8 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Williamstown, during the entire year, the rain falls for 169.6 days and collects up to 36.02" (915mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Williamstown, during January, snow falls for 10.3 days and regularly aggregates up to 2.8" (71mm) of snow. In Williamstown, during the entire year, snow falls for 37 days and aggregates up to 12.87" (327mm) of snow.Daylight
The average length of the day in January is 9h and 50min.On the first day of the month, sunrise is at 7:55 am and sunset at 5:27 pm. On the last day of January, sunrise is at 7:44 am and sunset at 5:58 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 4h of sunshine.UV index
The months with the lowest UV index 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 unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, a regular UV index of 2 translates into these guidelines:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January in Williamstown?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Williamstown have in January?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Williamstown, KY
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 24.6°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in January
Williamstown, KY
- Average pressure in January: 30.15"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Williamstown, KY
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in January
Williamstown, KY
- Average humidity in January: 79%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in January
Williamstown, KY
- Average rainfall in January: 2.52"
The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in January
Williamstown, KY
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in January
Williamstown, KY
- Average snowfall in January: 2.8"
The month with the highest snowfall is February (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Williamstown, KY
- Average snowfall days in January: 10.3 days
The month with the highest number of snowfall days is January (10.3 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
Williamstown, 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 30min).
- Average sunshine in January: 4h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Williamstown, KY
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is October (17 days).
The month with the least sunshine days is February (10.5 days).
Average UV index in January
Williamstown, 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
Williamstown, KY
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Williamstown, KY
- Average visibility in January: 5mi
The months with the highest visibility are March, April, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, May, July and December (5mi).
Williamstown, Kentucky, USA
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