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
Williamstown experiences its lowest average temperatures in January, reaching a peak of 36.1°F (2.3°C) and a minimum of 22.8°F (-5.1°C).Humidity
The months with the highest humidity in Williamstown are January and February, with an average relative humidity of 83%.Rainfall
In Williamstown, West Virginia, in January, it is raining for 9.1 days, with typically 1.61" (41mm) of accumulated precipitation. In Williamstown, during the entire year, the rain falls for 156.1 days and collects up to 24.8" (630mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Williamstown, in January, snow falls for 9.5 days, with typically accumulated 2.17" (55mm) of snow. Throughout the year, in Williamstown, West Virginia, there are 31.3 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
In Williamstown, the average length of the day in January is 9h and 46min.On the first day of January in Williamstown, sunrise is at 7:45 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:44 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Williamstown, West Virginia. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Williamstown?
How cold is January in Williamstown?
What is the most humid month in Williamstown?
What is the average humidity in January in Williamstown?
How many days does it rain in January in Williamstown?
How much does it snow in Williamstown in January?
How many hours of daylight does Williamstown have in January?
What time are sunrise and sunset in January in Williamstown?
What is the month with the least sunshine in Williamstown?
How long on average sun shines in January in Williamstown?
What is the month with the lowest UV index in Williamstown?
What is the UV index intensity in January in Williamstown?
Average temperature in January
Williamstown, WV
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in January: 22.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in January
Williamstown, WV
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Williamstown, WV
- Average wind speed in January: 6.7mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Williamstown, WV
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).
Average rainfall in January
Williamstown, WV
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in January
Williamstown, WV
- Average rainfall days in January: 9.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in January
Williamstown, WV
- Average snowfall in January: 2.17"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Williamstown, WV
- Average snowfall days in January: 9.5 days
The month with the highest number of snowfall days is January (9.5 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, WV
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in January
Williamstown, WV
- Average sunshine days in January: 14.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in January
Williamstown, WV
- 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, WV
- Average cloud cover in January: 64
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Williamstown, WV
- Average visibility in January: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Williamstown, West Virginia, USA
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