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 temperature records reveal January as the coldest month, marked by average highs of 36.1°F (2.3°C) and lows of 22.8°F (-5.1°C).Humidity
January and February, with an average relative humidity of 83%, are the most humid months.Rainfall
In January, the rain falls for 9.1 days. Throughout January, 1.61" (41mm) of precipitation is accumulated. In Marietta, during the entire year, the rain falls for 156.1 days and collects up to 24.8" (630mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Marietta, in January, during 9.5 snowfall days, 2.17" (55mm) of snow is typically accumulated. Throughout the year, in Marietta, there are 31.3 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 46min.On the first day of January, sunrise is at 7:45 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:44 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.4h 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 reading of 2, and below, represents a minimal health vulnerability 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:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What are the most humid months in Marietta?
What is the average humidity in January in Marietta?
How much does it rain in Marietta in January?
How much does it snow in January?
How many hours of daylight does Marietta have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Marietta?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Marietta, OH
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in January: 22.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in January
Marietta, OH
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Marietta, OH
- Average wind speed in January: 6.7mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Marietta, OH
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).
Average rainfall in January
Marietta, OH
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in January
Marietta, OH
- Average rainfall days in January: 9.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in January
Marietta, OH
- Average snowfall in January: 2.17"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Marietta, OH
- Average snowfall days in January: 9.5 days
The month with the highest number of snowfall days is January (9.5 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
Marietta, OH
- 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 24min).
- Average sunshine in January: 3h and 2min
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 24min).
Average sunshine days in January
Marietta, OH
- Average sunshine days in January: 14.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in January
Marietta, OH
- Average UV index in January: 2
The months with the highest UV index are 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
Marietta, OH
- Average cloud cover in January: 64
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Marietta, OH
- Average visibility in January: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Marietta, Ohio, USA
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