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
Grays experiences its lowest average temperatures in January, reaching a peak of 42.1°F (5.6°C) and a minimum of 27.1°F (-2.7°C).Humidity
In Grays, the average relative humidity in January is 78%.Rainfall
In Grays, during January, the rain falls for 13.3 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 186.6 rainfall days, and 33.15" (842mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grays are January through April, October through December. In Grays, in January, during 9.8 snowfall days, 3.31" (84mm) of snow is typically accumulated. Throughout the year, there are 33.5 snowfall days, and 13.23" (336mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 59min.On the first day of the month, sunrise is at 7:42 am and sunset at 5:24 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:53 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
January, February 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 low health risk from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 2 translates into these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Is it cold during January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Grays have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Grays have in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Grays, VA
- Average high temperature in January: 42.1°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in January: 27.1°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in January
Grays, 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
Grays, VA
- Average wind speed in January: 6.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Grays, VA
- Average humidity in January: 78%
The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are June, July, August, September and November (75%).
Average rainfall in January
Grays, VA
- Average rainfall in January: 2.8"
The wettest month (with the highest rainfall) is February (3.82").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Grays, VA
- Average rainfall days in January: 13.3 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in January
Grays, VA
- Average snowfall in January: 3.31"
The month with the highest snowfall is December (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Grays, 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
Grays, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Grays, VA
- Average sunshine days in January: 11.8 days
The months with the most sunshine days are October and November (16.3 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in January
Grays, 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 and December (UV index 2).
Average cloud cover in January
Grays, VA
- Average cloud cover in January: 52
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Grays, VA
- Average visibility in January: 5mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Grays, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location