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 time of the year is January, with temperatures averaging a high of 49.6°F (9.8°C) and a low of 34.3°F (1.3°C).Humidity
In January, the average relative humidity is 73%.Rainfall
January and October are months with the least rain when the rain falls for 10.7 days and typically aggregates up to 1.34" (34mm) of rain.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 1.1 days and typically aggregates up to 0.31" (8mm) of snow.Daylight
In January, the average length of the day in Norcross is 10h and 12min.On the first day of the month, sunrise is at 7:42 am and sunset at 5:38 pm. On the last day of January, sunrise is at 7:34 am and sunset at 6:06 pm EST.
Sunshine
The average sunshine in January is 5.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during January translates into the following guidance:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What is the average January temperature?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does Norcross have in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Norcross, GA
- Average high temperature in January: 49.6°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in January: 34.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in January
Norcross, GA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in January
Norcross, GA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in January
Norcross, GA
- Average humidity in January: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).
Average rainfall in January
Norcross, GA
- Average rainfall in January: 1.34"
The wettest month (with the highest rainfall) is August (3.58").
The driest months (with the least rainfall) are January and October (1.34").
Average rainfall days in January
Norcross, GA
- Average rainfall days in January: 10.7 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in January
Norcross, GA
- Average snowfall in January: 0.31"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Norcross, GA
- 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 May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Norcross, GA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in January
Norcross, GA
- Average sunshine days in January: 18.9 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in January
Norcross, GA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Norcross, GA
- Average cloud cover in January: 43
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in January
Norcross, GA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Norcross, Georgia, USA
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