Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December comes with a small reduction in the average high-temperature, subtly receding from a fresh 52.7°F (11.5°C) in November to a frosty 45.3°F (7.4°C). The month of December in Speonk is marked by an average minimum temperature of 38.1°F (3.4°C), slightly cooler than its daytime counterpart.Humidity
In Speonk, New York, the average relative humidity in December is 74%.Rainfall
In Speonk, in December, it is raining for 11 days, with typically 2.95" (75mm) of accumulated precipitation. In Speonk, during the entire year, the rain falls for 148 days and collects up to 29.76" (756mm) of precipitation.Snowfall
Months with snowfall in Speonk, New York, are January through March, May and December. December is the first month it typically snows. Throughout December, in the average 2.3 snowfall days, it receives 0.79" (20mm) of snow. In Speonk, New York, during the entire year, snow falls for 12.9 days and aggregates up to 4.45" (113mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:33 pm EST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Speonk, New York.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Always opt for UVA and UVB-resistant sunglasses on radiant days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Speonk in December?
What is the average humidity in December in Speonk?
How much does it rain in Speonk in December?
When does it start to snow in Speonk?
What is the month with the shortest days in Speonk?
How many hours of daylight does Speonk have in December?
What time are sunrise and sunset in December in Speonk?
What are the months with the least sunshine in Speonk?
How long on average sun shines in December in Speonk?
What is the month with the lowest UV index in Speonk?
What is the UV index intensity in December in Speonk?
Average temperature in December
Speonk, NY
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 38.1°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in December
Speonk, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Speonk, NY
- Average wind speed in December: 15mph
The windiest month (with the highest average wind speed) is January (15.4mph).
The calmest month (with the lowest average wind speed) is July (10.2mph).
Average humidity in December
Speonk, NY
- Average humidity in December: 74%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (72%).
Average rainfall in December
Speonk, NY
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Speonk, NY
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Speonk, NY
- Average snowfall in December: 0.79"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are April, June, July, August, September, October and November (0").
Average snowfall days in December
Speonk, NY
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Speonk, NY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Speonk, NY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
Speonk, NY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in December
Speonk, NY
- Average cloud cover in December: 50
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Speonk, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Speonk, New York, USA
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