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 sees the lowest average temperatures, reaching 36.7°F (2.6°C) at the peak and 22.1°F (-5.5°C) at the low.Humidity
The average relative humidity in January is 78%.Rainfall
In January, the rain falls for 9.8 days. Throughout January, 2.28" (58mm) of precipitation is accumulated. In Williamsville, during the entire year, the rain falls for 161.8 days and collects up to 29.53" (750mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Williamsville, in January, during 10.8 snowfall days, 7.32" (186mm) of snow is typically accumulated. In Williamsville, during the entire year, snow falls for 41.9 days and aggregates up to 36.5" (927mm) of snow.Daylight
In January, the average length of the day is 9h and 52min.On the first day of January, sunrise is at 7:34 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:39 pm EST.
Sunshine
With an average of 5h of sunshine, January has the least sunshine of the year in Williamsville.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Williamsville. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 2 in January transforms into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
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?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Williamsville, VA
- Average high temperature in January: 36.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in January: 22.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in January
Williamsville, VA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in January
Williamsville, VA
- Average wind speed in January: 7mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in January
Williamsville, VA
- Average humidity in January: 78%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June and July (76%).
Average rainfall in January
Williamsville, VA
- Average rainfall in January: 2.28"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in January
Williamsville, VA
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in January
Williamsville, VA
- Average snowfall in January: 7.32"
The month with the highest snowfall is February (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Williamsville, VA
- Average snowfall days in January: 10.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williamsville, VA
- 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 36min).
- Average sunshine in January: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in January
Williamsville, VA
- Average sunshine days in January: 14.9 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in January
Williamsville, VA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Williamsville, VA
- Average cloud cover in January: 49
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and November (Cloud cover 36).
Average visibility in January
Williamsville, VA
- Average visibility in January: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).
Williamsville, Virginia, USA
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