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
The month of January, characterized by an average high of 30.4°F (-0.9°C) and a low of 18°F (-7.8°C), is recognized as the coldest.Humidity
In January, the average relative humidity is 80%.Rainfall
In Williamsburg, in January, during 8.5 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Williamsburg, during the entire year, the rain falls for 134.1 days and collects up to 14.84" (377mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Williamsburg, during January, snow falls for 7.3 days and regularly aggregates up to 1.73" (44mm) of snow. In Williamsburg, Massachusetts, during the entire year, snow falls for 28.6 days and aggregates up to 6.5" (165mm) of snow.Daylight
The average length of the day in January is 9h and 30min.On the first day of January, sunrise is at 7:20 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:02 pm EST.
Sunshine
In January, the average sunshine is 5.1h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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 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?
How many hours of sunshine does Williamsburg have in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Williamsburg, MA
- Average high temperature in January: 30.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Williamsburg, MA
- Average pressure in January: 30.03"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Williamsburg, MA
- Average wind speed in January: 8mph
The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Williamsburg, MA
- Average humidity in January: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Williamsburg, MA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in January
Williamsburg, MA
- Average rainfall days in January: 8.5 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in January
Williamsburg, MA
- Average snowfall in January: 1.73"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Williamsburg, MA
- Average snowfall days in January: 7.3 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williamsburg, MA
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Williamsburg, MA
- Average sunshine days in January: 19 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in January
Williamsburg, MA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Williamsburg, MA
- Average cloud cover in January: 46
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Williamsburg, MA
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Williamsburg, Massachusetts, USA
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