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
Jefferson's temperature records reveal January as the coldest month, marked by average highs of 54.1°F (12.3°C) and lows of 38.3°F (3.5°C).Humidity
The average relative humidity in January is 76%.Rainfall
In Jefferson, during January, the rain falls for 11.4 days and regularly aggregates up to 3.5" (89mm) of precipitation. Throughout the year, there are 153.9 rainfall days, and 33.23" (844mm) of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall in Jefferson. January is the month with the most snowfall. Snow falls for 0.9 days and accumulates 0.43" (11mm) of snow.Daylight
The average length of the day in January is 10h and 19min.On the first day of the month, sunrise is at 6:52 am and sunset at 4:57 pm. On the last day of January, sunrise is at 6:46 am and sunset at 5:23 pm CST.
Sunshine
In January, the average sunshine in Jefferson, Alabama, is 5.2h.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 3 in January translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Enhance your sun protection with tightly woven, yet airy clothing. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What time of the year is the coldest in Jefferson?
What are January temperatures in Jefferson?
What is the average humidity in January in Jefferson?
How many days does it rain in January in Jefferson?
When does it snow the most in Jefferson?
How much does it snow in Jefferson in January?
How many hours of daylight does Jefferson have in January?
When are sunrise and sunset in January in Jefferson?
How many hours of sunshine does Jefferson have in January?
What is the month with the lowest UV index in Jefferson?
How high is the UV index in January in Jefferson?
Average temperature in January
Jefferson, AL
- Average high temperature in January: 54.1°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in January: 38.3°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in January
Jefferson, AL
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in January
Jefferson, AL
- Average wind speed in January: 7.5mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in January
Jefferson, AL
- Average humidity in January: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Jefferson, AL
- Average rainfall in January: 3.5"
The wettest months (with the highest rainfall) are April and December (3.74").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in January
Jefferson, AL
- Average rainfall days in January: 11.4 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is October (8.3 days).
Average snowfall in January
Jefferson, AL
- Average snowfall in January: 0.43"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in January
Jefferson, AL
- Average snowfall days in January: 0.9 days
The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Jefferson, AL
- 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 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in January
Jefferson, AL
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in January
Jefferson, AL
- 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
Jefferson, AL
- Average cloud cover in January: 43
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are September and October (Cloud cover 30).
Average visibility in January
Jefferson, AL
- 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).
Jefferson, Alabama, USA
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