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 January weather, marked by an average high temperature of 47.1°F (8.4°C) and an average low temperature of 29.5°F (-1.4°C), is the coldest in the year.Humidity
In Jefferson, the average relative humidity in January is 64%.Rainfall
In Jefferson, during January, the rain falls for 4.3 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Jefferson, there are 115 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Jefferson, during January, snow falls for 2.4 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, in Jefferson, there are 10.5 snowfall days, and 4.02" (102mm) of snow is accumulated.Daylight
In Jefferson, the average length of the day in January is 9h and 59min.On the first day of the month, sunrise is at 7:43 am and sunset at 5:25 pm. On the last day of January, sunrise is at 7:33 am and sunset at 5:55 pm CST.
Sunshine
In January, the average sunshine in Jefferson is 6.4h.UV index
In January, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In January, a daily UV index of 3 turns into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What part of the year is the coldest in Jefferson?
What is the average January temperature in Jefferson?
What is the average humidity in January in Jefferson?
How many days does it rain in January in Jefferson?
How many days does it snow in January in Jefferson?
What is the average length of the day in January in Jefferson?
When is the sunrise / sunset in January in Jefferson?
How many hours of sunshine does Jefferson have in January?
What is the UV index intensity in January in Jefferson?
Average temperature in January
Jefferson, OK
- Average high temperature in January: 47.1°F
The warmest month (with the highest average high temperature) is July (95°F).
The month with the lowest average high temperature is January (47.1°F).
- Average low temperature in January: 29.5°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in January
Jefferson, OK
- 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 (29.86"Hg).
Average wind speed in January
Jefferson, OK
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in January
Jefferson, OK
- Average humidity in January: 64%
The month with the highest relative humidity is May (69%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in January
Jefferson, OK
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in January
Jefferson, OK
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in January
Jefferson, OK
- Average snowfall in January: 0.91"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jefferson, OK
- Average snowfall days in January: 2.4 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jefferson, OK
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 2min
The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in January
Jefferson, OK
- Average sunshine days in January: 23.8 days
The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in January
Jefferson, OK
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Jefferson, OK
- Average cloud cover in January: 26
The months with the most cloud cover are March and April (Cloud cover 35).
The months with the least cloud cover are June and August (Cloud cover 19).
Average visibility in January
Jefferson, OK
- 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, Oklahoma, USA
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