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 its high average temperature of 55°F (12.8°C) and a low of 40.3°F (4.6°C), January is regarded as the coldest month.Humidity
The average relative humidity in January is 78%.Rainfall
In Gretna Green, in January, during 11.3 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. In Gretna Green, during the entire year, the rain falls for 154.1 days and collects up to 35.12" (892mm) of precipitation.Snowfall
Months with snowfall are January through March. The month with the most snowfall is January, when snow falls for 0.8 days and typically aggregates up to 0.55" (14mm) of snow.Daylight
The average length of the day in January is 10h and 21min.On the first day of the month, sunrise is at 7:06 am and sunset at 5:12 pm. On the last day of January, in Gretna Green, sunrise is at 6:59 am and sunset at 5:38 pm CST.
Sunshine
In January, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 3 translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the temperature in January?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
When does it start to snow?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index intensity in January in Gretna Green?
Average temperature in January
Gretna Green, LA
- Average high temperature in January: 55°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in January: 40.3°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in January
Gretna Green, 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 (29.96"Hg).
Average wind speed in January
Gretna Green, LA
- Average wind speed in January: 7.9mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and September (5.3mph).
Average humidity in January
Gretna Green, LA
- Average humidity in January: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Gretna Green, LA
- Average rainfall in January: 3.31"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in January
Gretna Green, LA
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in January
Gretna Green, LA
- Average snowfall in January: 0.55"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Gretna Green, LA
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Gretna Green, 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 month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in January
Gretna Green, LA
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in January
Gretna Green, 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
Gretna Green, LA
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and October (Cloud cover 28).
Average visibility in January
Gretna Green, LA
- 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).
Gretna Green, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location