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, with its high-temperature average of 41.5°F (5.3°C) and a low-temperature average of 27.9°F (-2.3°C), is the coldest month.Humidity
The average relative humidity in January is 78%.Rainfall
In January, the rain falls for 12.1 days. Throughout January, 3.07" (78mm) of precipitation is accumulated. In Jamestown, during the entire year, the rain falls for 178.7 days and collects up to 40.87" (1038mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The months with the most snowfall are January and February, with an average 2.91" (74mm) of accumulated snow.Daylight
In Jamestown, the average length of the day in January is 9h and 58min.On the first day of January, sunrise is at 6:53 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 5:03 pm CST.
Sunshine
The average sunshine in January is 4.1h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How many days does it snow in January?
How many hours of daylight does Jamestown have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Jamestown have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Jamestown, KY
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in January: 27.9°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in January
Jamestown, KY
- 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 (29.96"Hg).
Average wind speed in January
Jamestown, KY
- Average wind speed in January: 7.7mph
The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in January
Jamestown, KY
- Average humidity in January: 78%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April, June, August, September, October and November (76%).
Average rainfall in January
Jamestown, KY
- Average rainfall in January: 3.07"
The wettest month (with the highest rainfall) is February (4.25").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in January
Jamestown, KY
- Average rainfall days in January: 12.1 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (11.8 days).
Average snowfall in January
Jamestown, KY
- Average snowfall in January: 2.91"
The months with the highest snowfall are January and February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jamestown, KY
- Average snowfall days in January: 7.8 days
The month with the highest number of snowfall days is January (7.8 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
Jamestown, KY
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 4h and 1min
The months with the most sunshine are June and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Jamestown, KY
- Average sunshine days in January: 12.3 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in January
Jamestown, KY
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Jamestown, KY
- Average cloud cover in January: 56
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Jamestown, KY
- Average visibility in January: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Jamestown, Kentucky, USA
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