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 is the coldest month of the year, registering average temperatures as high as 36.1°F (2.3°C) and as low as 22.5°F (-5.3°C).Humidity
The average relative humidity in January is 77%.Rainfall
In Rio, during January, the rain falls for 10.4 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in Rio, there are 166 rainfall days, and 25.83" (656mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Rio, West Virginia, in January, during 9.1 snowfall days, 3.54" (90mm) of snow is typically accumulated. Throughout the year, there are 31.2 snowfall days, and 16.5" (419mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 47min.On the first day of January in Rio, sunrise is at 7:33 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:33 pm EST.
Sunshine
The months with the least sunshine in Rio are January and December, with an average of 5.1h of sunshine.UV index
January through March, 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 low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Rio?
How cold is January in Rio?
What is the average humidity in January in Rio?
How many days does it rain in January in Rio?
How much does it snow in Rio in January?
What is the average length of the day in January in Rio?
What time are sunrise and sunset in January in Rio?
What is the month with the least sunshine in Rio?
How many hours of sunshine does Rio have in January?
When is the lowest UV index in Rio?
What is the UV index reading in January in Rio?
Average temperature in January
Rio, WV
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Rio, WV
- 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
Rio, WV
- Average wind speed in January: 7mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in January
Rio, WV
- Average humidity in January: 77%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in January
Rio, WV
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are February and November (1.73").
Average rainfall days in January
Rio, WV
- Average rainfall days in January: 10.4 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in January
Rio, WV
- Average snowfall in January: 3.54"
The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rio, WV
- Average snowfall days in January: 9.1 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rio, WV
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 5h and 1min
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 6min).
Average sunshine days in January
Rio, WV
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in January
Rio, WV
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Rio, WV
- Average cloud cover in January: 47
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Rio, WV
- Average visibility in January: 5mi
The months with the highest visibility are April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, August, September and October (5mi).
Rio, West Virginia, USA
Weather forecast for your location
2. Allow the app to use your location