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

December weather forecast and climate
Jamestown, NY

The first month of the winter, Diciembre, is still a cold month in Jamestown, New York, with average temperature ranging between max 35.8°F (2.1°C) and min 20.7°F (-6.3°C).

Temperature

In Diciembre, the average high-temperature drops, from a frosty 47.8°F (8.8°C) in Noviembre, to a cold 35.8°F (2.1°C). In Jamestown, the average low-temperature is 20.7°F (-6.3°C).

Rainfall

In Jamestown, during Diciembre, the rain falls for 16.2 days and regularly aggregates up to 3.59" (91.2mm) of precipitation. In Jamestown, during the entire year, the rain falls for 153.2 days and collects up to 45.31" (1151mm) of precipitation.

Snowfall

Months with snowfall are Enero through Abril, Octubre through Diciembre. In Jamestown, in Diciembre, during 9.1 snowfall days, 20.8" (528.3mm) of snow is typically accumulated. Throughout the year, in Jamestown, there are 40.2 snowfall days, and 86.8" (2204.7mm) of snow is accumulated.

Daylight

With an average of 9.2h of daylight, Diciembre has the shortest days of the year.

Sunshine

With an average of 2h of sunshine, Diciembre has the least sunshine of the year.

UV index

Months with the lowest UV index are Enero and Diciembre, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In Diciembre, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. 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.

What is the temperature in Diciembre in Jamestown?

The average high-temperature, in Diciembre, is 35.8°F (2.1°C), while the average low-temperature is 20.7°F (-6.3°C).

How much does it rain in Jamestown in Diciembre?

In Jamestown, in Diciembre, during 16.2 rainfall days, 3.59" (91.2mm) of precipitation is typically accumulated.

How many days does it snow in Diciembre in Jamestown?

In Jamestown, New York, during Diciembre, snow falls for 9.1 days and regularly aggregates up to 20.8" (528.3mm) of snow.

What is the month with the shortest days in Jamestown?

With an average of 9.2h of daylight, Diciembre has the shortest days of the year in Jamestown, New York.

What is the average length of the day in Diciembre in Jamestown?

In Jamestown, New York, the average length of the day in Diciembre is 9.2h.

What is the month with the least sunshine in Jamestown?

With an average of 2h of sunshine, Diciembre has the least sunshine of the year in Jamestown.

How many hours of sunshine does Jamestown have in Diciembre?

In Jamestown, the average sunshine in Diciembre is 2h.

What is the month with the lowest UV index in Jamestown?

Months with the lowest UV index in Jamestown are Enero and Diciembre, with an average maximum UV index of 1.

How high is the UV index in Diciembre in Jamestown?

In Diciembre, the average daily maximum UV index in Jamestown is 1. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Jamestown, NY
  • Average high temperature in December: 35.8°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 December: 20.7°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 December - Jamestown, NY
  • Average rainfall in December: 3.6"

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 December - Jamestown, NY
  • Average rainfall days in December: 16.2 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 December - Jamestown, NY
  • Average snowfall in December: 20.8"

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 December - Jamestown, NY
  • Average snowfall days in December: 9.1 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 December / Average sunshine in December - Jamestown, NY
  • Average daylight in December: 9.2h

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 December: 2h

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 December - Jamestown, NY
  • Average UV index in December: 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).