December weather forecast and climate
Summitville, NY

The first month of the winter, December, is still a cold month in Summitville, New York, with average temperature varying between 25.7°F (-3.5°C) and 37.2°F (2.9°C).

Temperature

In Summitville, the average high-temperature in December decreases, from a chilly 47.5°F (8.6°C) in November, to a cold 37.2°F (2.9°C). In Summitville, New York, in December, the average low-temperature is 25.7°F (-3.5°C).

Humidity

December is the most humid month, with an average relative humidity of 83%.

Rainfall

In Summitville, in December, it is raining for 10.1 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, in Summitville, there are 147.3 rainfall days, and 19.88" (505mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Summitville. In Summitville, in December, during 6.6 snowfall days, 2.48" (63mm) of snow is typically accumulated. In Summitville, during the entire year, snow falls for 35.3 days, and aggregates up to 13.78" (350mm) of snow.

Daylight

The month with the shortest days in Summitville is December, with an average of 9.2h of daylight.

Sunshine

In Summitville, the average sunshine is 4.7h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Summitville. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 1 transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Summitville?

The average high-temperature, in December, in Summitville, New York, is 37.2°F (2.9°C), while the average low-temperature is 25.7°F (-3.5°C).

What is the most humid month in Summitville?

With an average relative humidity of 83%, December is the most humid month in Summitville.

What is the average humidity in December in Summitville?

The average relative humidity in December in Summitville is 83%.

How much does it rain in Summitville in December?

In Summitville, in December, it is raining for 10.1 days, with typically 1.77" (45mm) of accumulated precipitation.

How much does it snow in Summitville in December?

In Summitville, in December, snow falls for 6.6 days, with typically accumulated 2.48" (63mm) of snow.

What is the month with the shortest days in Summitville?

December has the shortest days of the year in Summitville, New York, with an average of 9.2h of daylight.

How many hours of daylight does Summitville have in December?

In Summitville, New York, the average length of the day in December is 9.2h.

How long on average sun shines in December in Summitville?

The average sunshine in December in Summitville is 4.7h.

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

December is the month with the lowest UV index in Summitville, with an average maximum UV index of 1.

How high is the UV index in December in Summitville?

The average daily maximum UV index in December in Summitville, New York, is 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.
Average temperature in December - Summitville, NY
  • Average high temperature in December: 2.9°C

The warmest month (with the highest average high temperature) is July (28.1°C).
The month with the lowest average high temperature is January (-0.1°C).

  • Average low temperature in December: -3.5°C

The month with the highest average low temperature is July (15.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in December - Summitville, NY
  • Average pressure in December: 1018.3mbar

The month with the highest atmospheric pressure is November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in December - Summitville, NY
  • Average wind speed in December: 10km/h

The windiest months (with the highest average wind speed) are February and March (11km/h).
The calmest month (with the lowest average wind speed) is August (7.2km/h).

Average humidity in December - Summitville, NY
  • Average humidity in December: 83%

The month with the highest relative humidity is December (83%).
Months with the lowest relative humidity are April and July (76%).

Average rainfall in December - Summitville, NY
  • Average rainfall in December: 45mm

The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is January (29mm).

Average rainfall days in December - Summitville, NY
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in December - Summitville, NY
  • Average snowfall in December: 63mm

The month with the highest snowfall is February (92mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December - Summitville, NY
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (8.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Summitville, NY
  • Average daylight in December: 9.2h

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

  • Average sunshine in December: 4.7h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.3h).

Average sunshine days in December - Summitville, NY
  • Average sunshine days in December: 17.3 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (11.5 days).

Average UV index in December - Summitville, NY
  • Average UV index in December: 1

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December - Summitville, NY
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in December - Summitville, NY
  • Average visibility in December: 8km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).