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
January is the coldest month, exhibiting average temperatures of 32°F (0°C) at the peak and 19.8°F (-6.8°C) at the base.Humidity
In Jefferson, the average relative humidity in January is 83%.Rainfall
In Jefferson, in January, during 6.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Jefferson, there are 139.5 rainfall days, and 18.07" (459mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Jefferson. In Jefferson, in January, snow falls for 8.4 days, with typically accumulated 1.69" (43mm) of snow. Throughout the year, in Jefferson, there are 28.4 snowfall days, and 7.44" (189mm) of snow is accumulated.Daylight
In January, the average length of the day in Jefferson is 9h and 41min.On the first day of January, sunrise is at 8:08 am and sunset at 5:30 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 6:03 pm EST.
Sunshine
January has the least sunshine of the year in Jefferson, with an average of 3.8h of sunshine.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What time of the year is the coldest in Jefferson?
How cold is January in Jefferson?
What is the average humidity in January in Jefferson?
How many days does it rain in January in Jefferson?
How much does it snow in Jefferson in January?
What is the average length of the day in January in Jefferson?
What time 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 month with the lowest UV index in Jefferson?
How high is the UV index in January in Jefferson?
Average temperature in January
Jefferson, IN
- Average high temperature in January: 32°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Jefferson, IN
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Jefferson, IN
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in January
Jefferson, IN
- Average humidity in January: 83%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Jefferson, IN
- Average rainfall in January: 1.22"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in January
Jefferson, IN
- Average rainfall days in January: 6.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in January
Jefferson, IN
- Average snowfall in January: 1.69"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jefferson, IN
- Average snowfall days in January: 8.4 days
The month with the highest number of snowfall days is January (8.4 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, IN
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Jefferson, IN
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in January
Jefferson, IN
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in January
Jefferson, IN
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Jefferson, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Jefferson, Indiana, USA
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