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 coldest time of the year is January, with temperatures averaging a high of 42.1°F (5.6°C) and a low of 27.1°F (-2.7°C).Humidity
In Dorter Mill, the average relative humidity in January is 78%.Rainfall
In Dorter Mill, in January, it is raining for 13.3 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 186.6 rainfall days, and 33.15" (842mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In January, it is snowing for 9.8 days. Throughout January, 3.31" (84mm) of snow is accumulated. In Dorter Mill, Virginia, during the entire year, snow falls for 33.5 days and aggregates up to 13.23" (336mm) of snow.Daylight
In Dorter Mill, the average length of the day in January is 9h and 59min.On the first day of January, sunrise is at 7:42 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:54 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
How many hours of daylight does Dorter Mill 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?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Dorter Mill, VA
- Average high temperature in January: 42.1°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in January: 27.1°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in January
Dorter Mill, VA
- Average pressure in January: 30.15"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
Dorter Mill, VA
- Average wind speed in January: 6.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Dorter Mill, VA
- Average humidity in January: 78%
The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are June, July, August, September and November (75%).
Average rainfall in January
Dorter Mill, VA
- Average rainfall in January: 2.8"
The wettest month (with the highest rainfall) is February (3.82").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Dorter Mill, VA
- Average rainfall days in January: 13.3 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in January
Dorter Mill, VA
- Average snowfall in January: 3.31"
The month with the highest snowfall is December (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Dorter Mill, VA
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Dorter Mill, 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 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Dorter Mill, VA
- Average sunshine days in January: 11.8 days
The months with the most sunshine days are October and November (16.3 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in January
Dorter Mill, VA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Dorter Mill, 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 August (Cloud cover 30).
Average visibility in January
Dorter Mill, VA
- Average visibility in January: 5mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Dorter Mill, Virginia, USA
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