January weather forecastMermentau, LA
January
Weather in January
January, the same as December, in Mermentau, Louisiana, is a moderate winter month, with an average temperature varying between 44.2°F (6.8°C) and 59°F (15°C).Temperature
January, having an average high-temperature of 59°F (15°C) and an average low-temperature of 44.2°F (6.8°C), is the coldest month.Humidity
In January, the average relative humidity is 77%.Rainfall
In Mermentau, in January, it is raining for 10.4 days, with typically 2.32" (59mm) of accumulated precipitation. In Mermentau, during the entire year, the rain falls for 156.6 days and collects up to 26.34" (669mm) of precipitation.Snowfall
The only month with snowfall is January. The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 0.12" (3mm) of snow.Daylight
The average length of the day in January is 10h and 28min.On the first day of the month, sunrise is at 7:06 am and sunset at 5:21 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:45 pm CST.
Sunshine
In January, the average sunshine is 5.5h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during January translates into the following guidance:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Mermentau, LA
- Average high temperature in January: 59°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in January: 44.2°F
The months with the highest average low temperature are July and August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in January
Mermentau, LA
- 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 (29.94"Hg).
Average wind speed in January
Mermentau, LA
- Average wind speed in January: 8.7mph
The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in January
Mermentau, LA
- Average humidity in January: 77%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Mermentau, LA
- Average rainfall in January: 2.32"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in January
Mermentau, LA
- Average rainfall days in January: 10.4 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in January
Mermentau, LA
- Average snowfall in January: 0.12"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Mermentau, LA
- Average snowfall days in January: 0.3 days
The month with the highest number of snowfall days is January (0.3 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
Mermentau, LA
- Average daylight in January: 10h and 30min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in January: 5h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Mermentau, LA
- Average sunshine days in January: 19 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (9.9 days).
Average UV index in January
Mermentau, LA
- Average UV index in January: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Mermentau, LA
- Average cloud cover in January: 39
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in January
Mermentau, 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).
