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
January is the month when Gretna experiences its coldest temperatures, averaging a high of 31.6°F (-0.2°C) and a low of 19.9°F (-6.7°C).Humidity
With an average relative humidity of 84%, January is the most humid month in Gretna.Rainfall
In Gretna, during January, the rain falls for 3.3 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Gretna, during the entire year, the rain falls for 82.2 days and collects up to 6.02" (153mm) of precipitation.Snowfall
Months with snowfall in Gretna are January through April, October through December. In January, in Gretna, it is snowing for 5.9 days. Throughout January, 0.43" (11mm) of snow is accumulated. Throughout the year, there are 21.1 snowfall days, and 1.85" (47mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:58 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:52 pm EST.
Sunshine
With an average of 3.4h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Gretna 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?
What is the UV index intensity in January?
Average temperature in January
Gretna, OH
- Average high temperature in January: 31.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in January: 19.9°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in January
Gretna, OH
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Gretna, OH
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Gretna, OH
- Average humidity in January: 84%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in January
Gretna, OH
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is June (0.75").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in January
Gretna, OH
- Average rainfall days in January: 3.3 days
The month with the highest number of rainy days is May (10 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in January
Gretna, OH
- Average snowfall in January: 0.43"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Gretna, OH
- Average snowfall days in January: 5.9 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Gretna, OH
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
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 July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in January
Gretna, OH
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is May (17.5 days).
Average UV index in January
Gretna, OH
- Average UV index in January: 2
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Gretna, 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 32).
Average visibility in January
Gretna, OH
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Gretna, Ohio, USA
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