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
In Rio, January is the coldest month, with temperatures averaging a high of 41.5°F (5.3°C) and a low of 26.1°F (-3.3°C).Humidity
The average relative humidity in January in Rio is 72%.Rainfall
The month with the least rainfall is January, when the rain falls for 9.7 days and typically collects 1.69" (43mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In January, it is snowing for 4.6 days. Throughout January, 2.8" (71mm) of snow is accumulated. 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 the month, sunrise is at 7:29 am and sunset at 5:04 pm. On the last day of January, sunrise is at 7:19 am and sunset at 5:35 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rio. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What part of the year is the coldest in Rio?
Is January cold in Rio?
What is the average humidity in January in Rio?
What is the driest month in Rio?
How much does it rain in Rio in January?
How much does it snow in Rio in January?
What is the average length of the day in January in Rio?
When is the sunrise / sunset in January in Rio?
What are the months with the least sunshine in Rio?
How long on average sun shines in January in Rio?
What are the months with the lowest UV index in Rio?
What is the UV index intensity in January in Rio?
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 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 36min).
- Average sunshine in January: 5h and 2min
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).
Rio, Virginia, USA
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