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
With average high and low temperatures of 54.9°F (12.7°C) and 39.6°F (4.2°C) respectively, January is Grayson's coldest month.Humidity
The average relative humidity in January is 79%.Rainfall
In Grayson, in January, it is raining for 11 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 172.1 rainfall days, and 39.45" (1002mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. The months with the most snowfall are January and February, with an average 0.31" (8mm) of accumulated snow.Daylight
The average length of the day in January is 10h and 20min.On the first day of January in Grayson, sunrise is at 7:08 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:40 pm CST.
Sunshine
In January, the average sunshine is 5.1h.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Grayson. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In January, the maximum UV index of 3 translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the usual temperature for Grayson in January?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Grayson, LA
- Average high temperature in January: 54.9°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (54.9°F).
- Average low temperature in January: 39.6°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in January
Grayson, LA
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Grayson, LA
- Average wind speed in January: 6.6mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in January
Grayson, LA
- Average humidity in January: 79%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Grayson, LA
- Average rainfall in January: 3.07"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.4").
Average rainfall days in January
Grayson, LA
- Average rainfall days in January: 11 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in January
Grayson, LA
- Average snowfall in January: 0.31"
The months with the highest snowfall are January and February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Grayson, LA
- Average snowfall days in January: 1.1 days
The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Grayson, LA
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in January: 5h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in January
Grayson, LA
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in January
Grayson, LA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in January
Grayson, LA
- Average cloud cover in January: 44
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in January
Grayson, LA
- Average visibility in January: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Grayson, Louisiana, USA
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