January weather forecast
Jamestown, NY

Weather in January

January, the same as December, in Jamestown, New York, is another subzero cold winter month, with temperature in the range of an average high of 28°F (-2.2°C) and an average low of 17.6°F (-8°C).

Temperature

The coldest month is January, with an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 17.6°F (-8°C).

Humidity

The average relative humidity in January is 88%.

Rainfall

In Jamestown, during January, the rain falls for 6.9 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Jamestown, during the entire year, the rain falls for 163.4 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Jamestown. In Jamestown, in January, snow falls for 20.7 days, with typically accumulated 7.05" (179mm) of snow. Throughout the year, there are 85.6 snowfall days, and 32.91" (836mm) of snow is accumulated.

Daylight

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, in Jamestown, sunrise is at 7:30 am and sunset at 5:29 pm EST.

Sunshine

January has the least sunshine of the year, with an average of 2.3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Jamestown?

The coldest month is January, with an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 17.6°F (-8°C).

What is the temperature in January in Jamestown?

The average high-temperature, in January, in Jamestown, New York, is 28°F (-2.2°C), while the average low-temperature is 17.6°F (-8°C).

What is the average humidity in January in Jamestown?

In Jamestown, the average relative humidity in January is 88%.

How much does it rain in Jamestown in January?

In Jamestown, during January, the rain falls for 6.9 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How much does it snow in Jamestown in January?

In January, in Jamestown, New York, it is snowing for 20.7 days. Throughout January, 7.05" (179mm) of snow is accumulated.

How many hours of daylight does Jamestown have in January?

In January, the average day length in Jamestown, New York, is 9h and 32min.

When is the sunrise / sunset in January in Jamestown?

On the first day of January, sunrise is at 7:45 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:29 pm EST.

What is the month with the least sunshine in Jamestown?

With an average of 2.3h of sunshine, January has the least sunshine of the year in Jamestown, New York.

How many hours of sunshine does Jamestown have in January?

The average sunshine duration in January in Jamestown, New York, is 2.3h.

What are the months with the lowest UV index in Jamestown?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Jamestown.

What is the UV index reading in January in Jamestown?

In Jamestown, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Jamestown, NY

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).

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Average pressure in January
Jamestown, NY

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).

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Average wind speed in January
Jamestown, NY

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).

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Average humidity in January
Jamestown, NY

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%).

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Average rainfall in January
Jamestown, NY

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").

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Average rainfall days in January
Jamestown, NY

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).

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Average snowfall in January
Jamestown, NY

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").

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Average snowfall days in January
Jamestown, NY

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).

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Average daylight in January /
Average sunshine in January
Jamestown, NY

Average daylight in January / Average sunshine in January - Jamestown, NY
  • Average daylight in January: 9h and 32min

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 10min).

  • Average sunshine in January: 2h and 18min

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).

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Average sunshine days in January
Jamestown, NY

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).

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Average UV index in January
Jamestown, NY

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).

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Average cloud cover in January
Jamestown, NY

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).

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Average visibility in January
Jamestown, NY

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).

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