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
With its high average temperature of 45.5°F (7.5°C) and a low of 32.9°F (0.5°C), January is regarded as the coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 10.8 days and typically collects 2.52" (64mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Smithfield, in January, during 2.7 snowfall days, 1.14" (29mm) of snow is typically accumulated. Throughout the year, there are 7.2 snowfall days, and 3.58" (91mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 58min.On the first day of January, sunrise is at 7:19 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:29 pm EST.
Sunshine
In January, the average sunshine is 5.5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Bear in mind! The Sun's UV radiation can nearly double in intensity due to 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?
What are the temperatures in January?
What is the average humidity in January?
What is the driest month?
How much does it rain in Smithfield in January?
How many days does it snow in January in Smithfield?
What is the average length of the day in January?
What time are sunrise and sunset in January in Smithfield?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January in Smithfield?
Average temperature in January
Smithfield, VA
- Average high temperature in January: 45.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in January: 32.9°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in January
Smithfield, VA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Smithfield, VA
- Average wind speed in January: 8.7mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in January
Smithfield, VA
- Average humidity in January: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Smithfield, VA
- Average rainfall in January: 2.52"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (2.52").
Average rainfall days in January
Smithfield, VA
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in January
Smithfield, VA
- Average snowfall in January: 1.14"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Smithfield, VA
- Average snowfall days in January: 2.7 days
The month with the highest number of snowfall days is January (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Smithfield, VA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in January
Smithfield, VA
- Average sunshine days in January: 17.1 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in January
Smithfield, VA
- Average UV index in January: 2
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Smithfield, VA
- Average cloud cover in January: 41
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in January
Smithfield, VA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Smithfield, Virginia, USA
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