Jamestown
New York, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Jamestown, NY

January, like December, is a freezing cold winter month in Jamestown, New York, with average temperature fluctuating between 31.8°F (-0.1°C) and 14.5°F (-9.7°C).

Temperature

January is the coldest month, with an average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 14.5°F (-9.7°C).

Rainfall

In Jamestown, during January, the rain falls for 17.3 days and regularly aggregates up to 2.9" (74.7mm) of precipitation. In Jamestown, New York, during the entire year, the rain falls for 153.2 days and collects up to 45.3" (1151mm) of precipitation.

Snowfall

Months with snowfall in Jamestown, New York, are January through April, October through December. The month with the most snowfall is January when snow falls for 11.8 days and typically aggregates up to 25.7" (652.8mm) of snow.

Daylight

In Jamestown, the average length of the day in January is 9.5h.

Sunshine

In January, the average sunshine is 3h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 1 in January interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Jamestown?

With an average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 14.5°F (-9.7°C), January is the coldest month in Jamestown, New York.

What is the temperature in January in Jamestown?

In January, the average high-temperature is 31.8°F (-0.1°C), and the average low-temperature is 14.5°F (-9.7°C).

How many days does it rain in January in Jamestown?

In Jamestown, New York, during January, the rain falls for 17.3 days and regularly aggregates up to 2.9" (74.7mm) of precipitation.

How many days does it snow in January in Jamestown?

In January, it is snowing for 11.8 days. Throughout January, 25.7" (652.8mm) of snow is accumulated.

When does it snow the most in Jamestown?

January is the month with the most snowfall. Snow falls for 11.8 days and accumulates 25.7" (652.8mm) of snow.

How many hours of daylight does Jamestown have in January?

In Jamestown, New York, the average length of the day in January is 9.5h.

How long on average sun shines in January in Jamestown?

In January, the average sunshine is 3h.

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

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

What is the UV index reading in January in Jamestown?

In Jamestown, New York, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
Average temperature in January - Jamestown, NY
  • Average high temperature in January: 31.9°F

The warmest month (with the highest average high temperature) is July (80°F).
The month with the lowest average high temperature is January (31.9°F).

  • Average low temperature in January: 14.5°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

Average rainfall in January - Jamestown, NY
  • Average rainfall in January: 2.9"

The wettest month (with the highest rainfall) is July (4.8").
The driest month (with the lowest rainfall) is February (2.6").

Average rainfall days in January - Jamestown, NY
  • Average rainfall days in January: 17.3 days

The month with the highest number of rainy days is January (17.3 days).
The month with the lowest number of rainy days is September (10.3 days).

Average snowfall in January - Jamestown, NY
  • Average snowfall in January: 25.7"

The month with the highest snowfall is January (25.7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in January - Jamestown, NY
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is January (11.8 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Jamestown, NY
  • Average daylight in January: 9.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 3h

Months with most sunshine are June and July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 2h).

Average UV index in January - Jamestown, NY
  • Average UV index in January: 1

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).