December weather forecast and climate
Jamestown, NY

What is the temperature in December in Jamestown?

In Jamestown, in December, the average high-temperature is 35.8°F (2.1°C), and the average low-temperature is 20.7°F (-6.3°C).

How much does it rain in Jamestown in December?

In December, in Jamestown, New York, the rain falls for 16.2 days. Throughout December, 3.6" (91.2mm) of precipitation is accumulated.

How much does it snow in Jamestown in December?

In December, in Jamestown, New York, it is snowing for 9.1 days. Throughout December, 20.8" (528.3mm) of snow is accumulated.
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).

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