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, characterized by an average high of 41.5°F (5.3°C) and a low of 27.5°F (-2.5°C), is recognized as the coldest.Humidity
The months with the lowest humidity are January, April and July, with an average relative humidity of 73%.Rainfall
January is the month with the least rainfall in Dumfries. Rain falls for 9.4 days and accumulates 1.97" (50mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Dumfries, Virginia. January is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.52" (64mm) of snow.Daylight
In January, the average length of the day in Dumfries is 9h and 50min.On the first day of January, sunrise is at 7:26 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:29 pm EST.
Sunshine
In January, the average sunshine is 5.3h.UV index
The months with the lowest UV index in Dumfries are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are the coldest months in Dumfries?
How cold is it in Dumfries in January?
What are the least humid months in Dumfries?
What is the average humidity in January in Dumfries?
What is the driest month in Dumfries?
How much does it rain in Dumfries in January?
When does it snow the most in Dumfries?
How many days does it snow in January in Dumfries?
How many hours of daylight does Dumfries have in January?
When is the sunrise / sunset in January in Dumfries?
How long on average sun shines in January in Dumfries?
What is the month with the lowest UV index in Dumfries?
What is the UV index intensity in January in Dumfries?
Average temperature in January
Dumfries, VA
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in January: 27.5°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in January
Dumfries, 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 (29.95"Hg).
Average wind speed in January
Dumfries, VA
- Average wind speed in January: 6.7mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Dumfries, VA
- Average humidity in January: 73%
The months with the highest relative humidity are October and December (78%).
The months with the lowest relative humidity are January, April and July (73%).
Average rainfall in January
Dumfries, VA
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in January
Dumfries, VA
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in January
Dumfries, VA
- Average snowfall in January: 2.52"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Dumfries, VA
- Average snowfall days in January: 4.9 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Dumfries, 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 30min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in January
Dumfries, VA
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in January
Dumfries, 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, November and December (UV index 2).
Average cloud cover in January
Dumfries, VA
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Dumfries, VA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Dumfries, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location
