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 is the coldest month, with an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 24.3°F (-4.3°C).Humidity
In Willis, the average relative humidity in January is 77%.Rainfall
In Willis, during January, the rain falls for 10.8 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 161.9 rainfall days, and 21.97" (558mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In January, in Willis, it is snowing for 8.3 days. Throughout January, 2.48" (63mm) of snow is accumulated. Throughout the year, there are 29.5 snowfall days, and 11.3" (287mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 59min.On the first day of the month, sunrise is at 7:34 am and sunset at 5:16 pm. On the last day of January, sunrise is at 7:24 am and sunset at 5:45 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.9h 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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Willis?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Willis have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Willis?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Willis, VA
- Average high temperature in January: 39.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in January: 24.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in January
Willis, VA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in January
Willis, VA
- Average wind speed in January: 8.1mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in January
Willis, VA
- Average humidity in January: 77%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, June, July and November (76%).
Average rainfall in January
Willis, VA
- Average rainfall in January: 1.38"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in January
Willis, VA
- 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 (8.8 days).
Average snowfall in January
Willis, VA
- Average snowfall in January: 2.48"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Willis, VA
- Average snowfall days in January: 8.3 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Willis, VA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in January
Willis, VA
- Average sunshine days in January: 15.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in January
Willis, VA
- 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
Willis, VA
- Average cloud cover in January: 52
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in January
Willis, VA
- Average visibility in January: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Willis, Virginia, USA
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