Normal weather for Long Island in December
It's warm in December in Long Island with an average temperature of 26°C. Temperatures this month range from a low of 26°C to a high of 27°C. At night, you can expect temperatures between 24°C and 26°C.
In December, there is an average of 58 mm of precipitation, spread over 9 days. The wind speed is around 5 Bft, mostly coming from the East.
Long Island in December |
New York | ||
|---|---|---|---|
 Average Temperature |
26°C | 9°C | |
 High Temp |
27°C | 12°C | |
| Low Temp |
26°C | 4°C | |
 Total Precipitation |
58 mm | 133 mm | |
| Rainy Days |
9 days | 17 days | |
Start of December
The month of December starts in Long Island with hot temps, averaging around 27°C during the day and nights around 26°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid December
By mid-December, daytime temps stay steady at around 27°C, with nights around 25°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
End of December
By the end of December, the average daytime temperature in Long Island is around 26°C, while nighttime temps are about 25°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is December a good time to visit Long Island?
Looking for great weather? December is a good time to be in Long Island. The temperatures are nice, and there’s not too much rain.
The hurricane season in Long Island runs from June to November.
Temperature records for Long Island in December
Check out the climate of Long Island for all months and discover the best travel time
November
Daily Temperature in December in Long Island
This chart shows the average daily high and low temperatures in December for Long Island, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Long Island
The chart below shows the average daily precipitation in December for Long Island, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 9 days of precipitation in Long Island.
Daily UV Index in December in Long Island
This chart shows the average daily UV index in December in Long Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Long Island Over the Years
This chart shows the average temperature in December in Long Island, measured in degrees Celsius, over the past few years.
Total Precipitation in December in Long Island Over the Years
This chart shows the average precipitation in December in Long Island, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in December for Long Island
Click on any day in December to get detailed info about the usual weather on that day in Long Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Long Island
Have you been to Long Island in December?
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Average Weather in Long Island by Month
Click on a month below to see detailed weather info for Long Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Long Island for all months at once
