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 59°F (15°C) and a low of 43.2°F (6.2°C), January is regarded as the coldest month.Humidity
In January, the average relative humidity is 78%.Rainfall
In Old Jefferson, in January, it is raining for 12.1 days, with typically 3.07" (78mm) of accumulated precipitation. In Old Jefferson, Louisiana, during the entire year, the rain falls for 187.5 days and collects up to 40" (1016mm) of precipitation.Snowfall
January and December are months with snowfall. January is the month with the most snowfall. Snow falls for 0.3 days and accumulates 0.2" (5mm) of snow.Daylight
In January, the average length of the day is 10h and 27min.On the first day of the month, sunrise is at 7:00 am and sunset at 5:14 pm. On the last day of January, sunrise is at 6:55 am and sunset at 5:39 pm CST.
Sunshine
The average sunshine in January is 5.4h.UV index
The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: During January, 4 as the daily maximum UV index converts into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Consider carefully! The reflective quality of 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 in Old Jefferson?
What are January temperatures?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
What is the last month it snows?
How many hours of daylight does Old Jefferson have in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Old Jefferson, LA
- Average high temperature in January: 59°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in January: 43.2°F
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).
Average pressure in January
Old Jefferson, 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 and August (29.96"Hg).
Average wind speed in January
Old Jefferson, LA
- Average wind speed in January: 6.6mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in January
Old Jefferson, LA
- Average humidity in January: 78%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Old Jefferson, LA
- Average rainfall in January: 3.07"
The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in January
Old Jefferson, LA
- Average rainfall days in January: 12.1 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in January
Old Jefferson, LA
- Average snowfall in January: 0.2"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Old Jefferson, 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 and November (0 days).
Average daylight in January /
Average sunshine in January
Old Jefferson, LA
- Average daylight in January: 10h and 2min
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 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in January
Old Jefferson, LA
- Average sunshine days in January: 17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).
Average UV index in January
Old Jefferson, 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
Old Jefferson, LA
- Average cloud cover in January: 40
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in January
Old Jefferson, LA
- Average visibility in January: 6mi
The months with the highest visibility are January, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August and September (5mi).
Old Jefferson, Louisiana, USA
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