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
The month of January sees the lowest average temperatures, reaching 54°F (12.2°C) at the peak and 37.9°F (3.3°C) at the low.Humidity
The average relative humidity in January is 77%.Rainfall
In January, in Jefferson, Texas, the rain falls for 10.3 days. Throughout January, 2.52" (64mm) of precipitation is accumulated. In Jefferson, during the entire year, the rain falls for 155.6 days and collects up to 35.79" (909mm) of precipitation.Snowfall
Months with snowfall are January through March. January is the first month it typically snows in Jefferson. Throughout January, in the average 0.8 snowfall days, it receives 0.59" (15mm) of snow. In Jefferson, during the entire year, snow falls for 2.6 days and aggregates up to 1.34" (34mm) of snow.Daylight
In January, the average length of the day is 10h and 17min.On the first day of the month, sunrise is at 7:19 am and sunset at 5:22 pm. On the last day of January, in Jefferson, Texas, sunrise is at 7:12 am and sunset at 5:48 pm CST.
Sunshine
The average sunshine in January in Jefferson is 5.3h.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 3 during January, leads to the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What are the coldest months 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 start snowing in Jefferson?
What is the average length of the day in January in Jefferson?
When are sunrise and sunset in January in Jefferson?
How many hours of sunshine does Jefferson have in January?
What are the months with the lowest UV index in Jefferson?
What is the UV index intensity in January in Jefferson?
Average temperature in January
Jefferson, TX
- Average high temperature in January: 54°F
The warmest month (with the highest average high temperature) is July (94.8°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in January: 37.9°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in January
Jefferson, TX
- 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 (29.93"Hg).
Average wind speed in January
Jefferson, TX
- Average wind speed in January: 6.5mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in January
Jefferson, TX
- Average humidity in January: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (67%).
Average rainfall in January
Jefferson, TX
- Average rainfall in January: 2.52"
The wettest month (with the highest rainfall) is April (4.41").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in January
Jefferson, TX
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in January
Jefferson, TX
- Average snowfall in January: 0.59"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Jefferson, TX
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is February (1.1 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, TX
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Jefferson, TX
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in January
Jefferson, TX
- 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, TX
- Average cloud cover in January: 41
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Jefferson, TX
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Jefferson, Texas, USA
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