January weather forecastRio, VA
January
Weather in January
January, the same as December, is an icy winter month in Rio, Virginia, with an average temperature varying between 26.1°F (-3.3°C) and 41.5°F (5.3°C).Temperature
January is the month when Rio sees the lowest average temperatures, with a high of 41.5°F (5.3°C) and a low of 26.1°F (-3.3°C).Humidity
In Rio, the average relative humidity in January is 72%.Rainfall
January is the month with the least rainfall. Rain falls for 9.7 days and accumulates 1.69" (43mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Rio, during January, snow falls for 4.6 days and regularly aggregates up to 2.8" (71mm) of snow. In Rio, during the entire year, snow falls for 14.6 days and aggregates up to 10.43" (265mm) of snow.Daylight
In Rio, Virginia, the average length of the day in January is 9h and 53min.On the first day of January, sunrise is at 7:29 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:35 pm EST.
Sunshine
January and December, with an average of 5.4h of sunshine, are months with the least 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 estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 2 in January leads to these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Rio, VA
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in January
Rio, VA
- Average pressure in January: 30.12"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
Rio, VA
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Rio, VA
- Average humidity in January: 72%
The months with the highest relative humidity are May, September, October and December (76%).
The month with the lowest relative humidity is July (71%).
Average rainfall in January
Rio, VA
- Average rainfall in January: 1.69"
The wettest months (with the highest rainfall) are April and May (2.91").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in January
Rio, VA
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in January
Rio, VA
- Average snowfall in January: 2.8"
The month with the highest snowfall is March (3.07").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Rio, VA
- Average snowfall days in January: 4.6 days
The month with the highest number of snowfall days is January (4.6 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
Rio, VA
- Average daylight in January: 9h and 54min
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 36min).
- Average sunshine in January: 5h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in January
Rio, VA
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is December (19.9 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in January
Rio, 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
Rio, VA
- Average cloud cover in January: 41
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in January
Rio, VA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
