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 coldest month, January, generally records average temperatures ranging from a high of 30.6°F (-0.8°C) to a low of 21°F (-6.1°C).Humidity
In January, the average relative humidity is 86%.Rainfall
In Jefferson, in January, during 7.9 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Jefferson, there are 181 rainfall days, and 36.34" (923mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Jefferson. The month with the most snowfall is January, when snow falls for 18.4 days and typically aggregates up to 6.69" (170mm) of snow.Daylight
In January, the average length of the day in Jefferson is 9h and 34min.On the first day of the month, sunrise is at 7:50 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:36 am and sunset at 5:36 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.5h of sunshine.UV index
In Jefferson, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In January, the UV index of 2 transforms into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the coldest month in Jefferson?
How cold is January in Jefferson?
What is the average humidity in January in Jefferson?
How much does it rain in Jefferson in January?
When does it snow the most 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 are sunrise and sunset in January in Jefferson?
What is the month with the least sunshine in Jefferson?
How long on average sun shines in January in Jefferson?
What is the UV index reading in January in Jefferson?
Average temperature in January
Jefferson, OH
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 21°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in January
Jefferson, OH
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Jefferson, OH
- Average wind speed in January: 11.4mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in January
Jefferson, OH
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in January
Jefferson, OH
- Average rainfall in January: 2.68"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in January
Jefferson, OH
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in January
Jefferson, OH
- Average snowfall in January: 6.69"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jefferson, OH
- Average snowfall days in January: 18.4 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jefferson, OH
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 2h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in January
Jefferson, OH
- Average sunshine days in January: 5.9 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in January
Jefferson, OH
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Jefferson, OH
- Average cloud cover in January: 75
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in January
Jefferson, OH
- Average visibility in January: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Jefferson, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location
