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, with its average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 23.9°F (-4.5°C), holds the record as the coldest month.Humidity
In January, the average relative humidity is 80%.Rainfall
In Roberts Mill, during January, the rain falls for 12.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Roberts Mill, during the entire year, the rain falls for 191 days and collects up to 30.87" (784mm) of precipitation.Snowfall
Months with snowfall in Roberts Mill are January through May, October through December. In January, it is snowing for 9.8 days. Throughout January, 4.25" (108mm) of snow is accumulated. Throughout the year, there are 38.6 snowfall days, and 18.66" (474mm) of snow is accumulated.Daylight
In Roberts Mill, the average length of the day in January is 9h and 59min.On the first day of the month, sunrise is at 7:38 am and sunset at 5:20 pm. On the last day of January, sunrise is at 7:28 am and sunset at 5:49 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 4.5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. 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 is the coldest month?
Is January cold?
What is the average humidity in January?
How many days does it rain in January in Roberts Mill?
How much does it snow in January?
How many hours of daylight does Roberts 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?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Roberts Mill, VA
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 23.9°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in January
Roberts 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
Roberts Mill, 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
Roberts Mill, VA
- Average humidity in January: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in January
Roberts Mill, VA
- Average rainfall in January: 2.17"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in January
Roberts Mill, VA
- Average rainfall days in January: 12.3 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in January
Roberts Mill, VA
- Average snowfall in January: 4.25"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Roberts 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
Roberts 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 3min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Roberts Mill, VA
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in January
Roberts Mill, VA
- Average UV index in January: 2
The month with the highest UV index is 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
Roberts Mill, VA
- Average cloud cover in January: 58
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 40).
Average visibility in January
Roberts Mill, 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).
Roberts Mill, Virginia, USA
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