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
The coldest period tends to be January, when average temperatures fluctuate between a high of 38.8°F (3.8°C) and a low of 25.7°F (-3.5°C).Humidity
The average relative humidity in January is 79%.Rainfall
In Grayson, in January, it is raining for 11.8 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 171.1 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grayson are January through April, October through December. In Grayson, in January, during 10.1 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Grayson, during the entire year, snow falls for 35.9 days and aggregates up to 11.73" (298mm) of snow.Daylight
In Grayson, the average length of the day in January is 9h and 52min.On the first day of the month, sunrise is at 7:48 am and sunset at 5:21 pm. On the last day of January, in Grayson, sunrise is at 7:37 am and sunset at 5:52 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.9h 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 Grayson. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 2 suggests this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Grayson?
How cold does it get in Grayson in January?
What is the average humidity in January in Grayson?
How much does it rain in Grayson in January?
How much does it snow in Grayson in January?
How many hours of daylight does Grayson have in January?
What time are sunrise and sunset in January in Grayson?
What is the month with the least sunshine in Grayson?
How many hours of sunshine does Grayson have in January?
What are the months with the lowest UV index in Grayson?
What is the UV index reading in January in Grayson?
Average temperature in January
Grayson, KY
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
Grayson, KY
- 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 (29.97"Hg).
Average wind speed in January
Grayson, KY
- Average wind speed in January: 7.1mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in January
Grayson, KY
- Average humidity in January: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in January
Grayson, KY
- Average rainfall in January: 2.28"
The wettest months (with the highest rainfall) are April and December (3.07").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in January
Grayson, KY
- Average rainfall days in January: 11.8 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in January
Grayson, KY
- Average snowfall in January: 2.76"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Grayson, KY
- Average snowfall days in January: 10.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Grayson, KY
- 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 30min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Grayson, KY
- Average sunshine days in January: 12.3 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in January
Grayson, KY
- 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
Grayson, KY
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Grayson, KY
- Average visibility in January: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Grayson, Kentucky, USA
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