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
Grafton's coldest month, January, registers temperatures that range from a high of 35.6°F (2°C) to a low of 21.7°F (-5.7°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 84%.Rainfall
In January, the rain falls for 12.1 days. Throughout January, 2.99" (76mm) of precipitation is accumulated. In Grafton, West Virginia, during the entire year, the rain falls for 184.5 days and collects up to 35.35" (898mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Grafton is January, when snow falls for 16.8 days and typically aggregates up to 7.87" (200mm) of snow.Daylight
The average length of the day in January in Grafton is 9h and 46min.On the first day of the month, sunrise is at 7:39 am and sunset at 5:07 pm. On the last day of January, sunrise is at 7:28 am and sunset at 5:38 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.2h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 2 in January leads to these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What month is the coldest in Grafton?
How cold is January in Grafton?
What is the most humid month in Grafton?
What is the average humidity in January in Grafton?
How many days does it rain in January in Grafton?
When does it snow the most in Grafton?
How many days does it snow in January in Grafton?
How many hours of daylight does Grafton have in January?
When are sunrise and sunset in January in Grafton?
What is the month with the least sunshine in Grafton?
How many hours of sunshine does Grafton have in January?
What are the months with the lowest UV index in Grafton?
How high is the UV index in January in Grafton?
Average temperature in January
Grafton, WV
- Average high temperature in January: 35.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in January: 21.7°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in January
Grafton, WV
- 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
Grafton, WV
- Average wind speed in January: 7.3mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in January
Grafton, WV
- Average humidity in January: 84%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in January
Grafton, WV
- Average rainfall in January: 2.99"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in January
Grafton, WV
- Average rainfall days in January: 12.1 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (11.9 days).
Average snowfall in January
Grafton, WV
- Average snowfall in January: 7.87"
The month with the highest snowfall is January (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Grafton, WV
- Average snowfall days in January: 16.8 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Grafton, 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: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in January
Grafton, WV
- Average sunshine days in January: 6.5 days
The month with the most sunshine days is October (13.7 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in January
Grafton, WV
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Grafton, WV
- Average cloud cover in January: 68
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Grafton, WV
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Grafton, West Virginia, USA
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