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
Marietta's coldest month, January, registers temperatures that range from a high of 49.6°F (9.8°C) to a low of 34.2°F (1.2°C).Humidity
In Marietta, the average relative humidity in January is 74%.Rainfall
In January, the rain falls for 12.3 days. Throughout January, 3.23" (82mm) of precipitation is accumulated. In Marietta, during the entire year, the rain falls for 177.1 days and collects up to 41.93" (1065mm) of precipitation.Snowfall
Months with snowfall are January through March and December. January is the month with the most snowfall. Snow falls for 1.6 days and accumulates 0.98" (25mm) of snow.Daylight
The average length of the day in January in Marietta, Georgia, is 10h and 12min.On the first day of the month, sunrise is at 7:43 am and sunset at 5:39 pm. On the last day of January, sunrise is at 7:35 am and sunset at 6:07 pm EST.
Sunshine
In January, the average sunshine in Marietta is 5.6h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 3 in January transforms into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What part of the year is the coldest in Marietta?
What are January temperatures in Marietta?
What is the average humidity in January in Marietta?
How much does it rain in Marietta in January?
When does it snow the most in Marietta?
How much does it snow in Marietta in January?
How many hours of daylight does Marietta have in January?
When is the sunrise / sunset in January in Marietta?
How many hours of sunshine does Marietta have in January?
When is the lowest UV index in Marietta?
How high is the UV index in January in Marietta?
Average temperature in January
Marietta, GA
- Average high temperature in January: 49.6°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in January: 34.2°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in January
Marietta, 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
Marietta, GA
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
Marietta, GA
- Average humidity in January: 74%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is August (68%).
Average rainfall in January
Marietta, GA
- Average rainfall in January: 3.23"
The wettest month (with the highest rainfall) is August (4.88").
The driest month (with the least rainfall) is October (2.24").
Average rainfall days in January
Marietta, GA
- Average rainfall days in January: 12.3 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in January
Marietta, GA
- Average snowfall in January: 0.98"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Marietta, GA
- Average snowfall days in January: 1.6 days
The month with the highest number of snowfall days is January (1.6 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
Marietta, 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
Marietta, GA
- Average sunshine days in January: 16 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in January
Marietta, GA
- Average UV index in January: 3
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 3).
Average cloud cover in January
Marietta, GA
- Average cloud cover in January: 44
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in January
Marietta, 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).
Marietta, Georgia, USA
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