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
January brings the lowest temperatures, with an average high of 26.2°F (-3.2°C) and an average low of 15.4°F (-9.2°C).Humidity
January and February, with an average relative humidity of 88%, are the most humid months.Rainfall
In Williamstown, in January, during 9.4 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Williamstown, during the entire year, the rain falls for 176.3 days and collects up to 37.09" (942mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 21.4 days and typically aggregates up to 11.54" (293mm) of snow.Daylight
In Williamstown, the average length of the day in January is 9h and 24min.On the first day of January, sunrise is at 7:36 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:13 pm EST.
Sunshine
The months with the least sunshine are January and February, with an average of 2.5h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To cut down UV radiation exposure by about half, sport a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is January?
What are the most humid months?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Williamstown have in January?
When are sunrise and sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Williamstown have in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Williamstown, NY
- Average high temperature in January: 26.2°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in January: 15.4°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in January
Williamstown, NY
- Average pressure in January: 30.04"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Williamstown, NY
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in January
Williamstown, NY
- Average humidity in January: 88%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in January
Williamstown, NY
- Average rainfall in January: 2.91"
The wettest months (with the highest rainfall) are May and October (3.66").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in January
Williamstown, NY
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is October (18.5 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in January
Williamstown, NY
- Average snowfall in January: 11.54"
The month with the highest snowfall is January (11.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Williamstown, NY
- Average snowfall days in January: 21.4 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williamstown, NY
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 2h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 30min).
Average sunshine days in January
Williamstown, NY
- Average sunshine days in January: 5 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (4.6 days).
Average UV index in January
Williamstown, NY
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in January
Williamstown, NY
- Average cloud cover in January: 75
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Williamstown, NY
- Average visibility in January: 4mi
The months with the highest visibility are April and October (6mi).
The months with the lowest visibility are January and February (4mi).
Williamstown, New York, USA
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