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
During the coldest month, January, temperatures average a high of 28°F (-2.2°C) and a low of 17.6°F (-8°C).Humidity
The average relative humidity in January is 88%.Rainfall
In Jamestown, in January, it is raining for 6.9 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, in Jamestown, there are 163.4 rainfall days, and 27.72" (704mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Jamestown, during January, snow falls for 20.7 days and regularly aggregates up to 7.05" (179mm) of snow. Throughout the year, there are 85.6 snowfall days, and 32.91" (836mm) of snow is accumulated.Daylight
In Jamestown, the average length of the day in January is 9h and 32min.On the first day of the month, sunrise is at 7:45 am and sunset at 4:55 pm. On the last day of January, sunrise is at 7:31 am and sunset at 5:29 pm EST.
Sunshine
With an average of 2.3h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Jamestown. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 1 suggests this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Jamestown?
How cold is January in Jamestown?
What is the average humidity in January in Jamestown?
How much does it rain in Jamestown in January?
How much does it snow in Jamestown in January?
What is the average length of the day in January in Jamestown?
What time are sunrise and sunset in January in Jamestown?
What is the month with the least sunshine in Jamestown?
How long on average sun shines in January in Jamestown?
What are the months with the lowest UV index in Jamestown?
How high is the UV index in January in Jamestown?
Average temperature in January
Jamestown, NY
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in January: 17.6°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in January
Jamestown, NY
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Jamestown, NY
- Average wind speed in January: 11.1mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in January
Jamestown, NY
- Average humidity in January: 88%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are April, May and September (81%).
Average rainfall in January
Jamestown, NY
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Jamestown, NY
- Average rainfall days in January: 6.9 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in January
Jamestown, NY
- Average snowfall in January: 7.05"
The month with the highest snowfall is December (7.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jamestown, NY
- Average snowfall days in January: 20.7 days
The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jamestown, NY
- Average daylight in January: 9h and 3min
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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in January
Jamestown, NY
- Average sunshine days in January: 5.6 days
The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (5.6 days).
Average UV index in January
Jamestown, NY
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Jamestown, NY
- Average cloud cover in January: 79
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Jamestown, NY
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (4mi).
Jamestown, New York, USA
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