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 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 month of January sees the lowest average temperatures, reaching 60.4°F (15.8°C) at the peak and 48.6°F (9.2°C) at the low.Humidity
In January, the average relative humidity is 74%.Rainfall
In Gretna, in January, it is raining for 5.8 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, in Gretna, Louisiana, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.Snowfall
The only month with snowfall is January. January has the most snowfall days of the year. Snow falls for 0.1 days.Daylight
The average length of the day in January in Gretna is 10h and 29min.On the first day of the month, sunrise is at 6:55 am and sunset at 5:11 pm. On the last day of January, sunrise is at 6:50 am and sunset at 5:36 pm CST.
Sunshine
In Gretna, the average sunshine in January is 5.7h.UV index
In Gretna, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 4 in January translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Boost your sun resistance with garments that are densely woven yet spacious. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What month is the coldest in Gretna?
What are the temperatures in Gretna in January?
What is the average humidity in January in Gretna?
How many days does it rain in January in Gretna?
What is the snowiest month in Gretna?
When does it start to snow in Gretna?
What is the average length of the day in January in Gretna?
What time are sunrise and sunset in January in Gretna?
How many hours of sunshine does Gretna have in January?
How high is the UV index in January in Gretna?
Average temperature in January
Gretna, LA
- Average high temperature in January: 60.4°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in January: 48.6°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in January
Gretna, LA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in January
Gretna, LA
- Average wind speed in January: 9.6mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
Gretna, LA
- Average humidity in January: 74%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Gretna, LA
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in January
Gretna, LA
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in January
Gretna, LA
- Average snowfall days in January: 0.1 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Gretna, LA
- Average daylight in January: 10h and 3min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Gretna, LA
- Average sunshine days in January: 23.1 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in January
Gretna, LA
- Average UV index in January: 4
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Gretna, LA
- Average cloud cover in January: 36
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in January
Gretna, 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, Louisiana, USA
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