Long Island (NY)
December
Weather in Long Island, New York for December 2026
Your guide to Long Island weather in December - trends and predictions
With an average of 3 snowy days, Long Island usually enjoys a light touch of snow in December.
Long Island experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 306.8 mm.
Is December a good time to visit Long Island? check out the best time to travel to Long Island page.
✨ Is December a good time to visit Long Island? – Ask the AI Weatherman
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18
Dry days
10
Rainy days
3
Snow days
4°/-1°
Temperatures
26 km/h
Avg max wind
79 %
Avg humidity
Long Island Weather December
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Temperatures trend during December in Long Island
See the weather trend as well as the moving average line
December weather in Long Island day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Light rain | 4° /-2° | 2.5 mm | 0 cm | |
| Dec. 2 |  Heavy rain | 6° /-1° | 68.8 mm | 0 cm | |
| Dec. 3 |  Sunny | 3° /0° | 0 mm | 0 cm | |
| Dec. 4 |  Overcast | 6° /-2° | 0.6 mm | 0 cm | |
| Dec. 5 |  Moderate rain | 4° /-3° | 16.6 mm | 0 cm | |
| Dec. 6 |  Cloudy | 2° /-1° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | 4° /-1° | 0.1 mm | 0 cm | |
| Dec. 8 | Overcast | 5° /-2° | 0 mm | 0 cm | |
| Dec. 9 |  Moderate or heavy rain shower | 6° /-2° | 9.2 mm | 0 cm | |
| Dec. 10 | Light rain | 10° /4° | 4.1 mm | 0 cm | |
| Dec. 11 | Heavy rain | 9° /4° | 48.8 mm | 0 cm | |
| Dec. 12 |  Light snow | 3° /-2° | 5.5 mm | 2.3 cm | |
| Dec. 13 | Sunny | 2° /-3° | 0 mm | 0 cm | |
| Dec. 14 | Light snow | 1° /-4° | 4.8 mm | 2.7 cm | |
| Dec. 15 | Overcast | 1° /-5° | 0 mm | 0 cm | |
| Dec. 16 | Moderate rain | 6° /-1° | 14.6 mm | 0 cm | |
| Dec. 17 | Moderate rain | 9° /3° | 12.8 mm | 0 cm | |
| Dec. 18 |  Patchy rain possible | 9° /-1° | 2.1 mm | 0 cm | |
| Dec. 19 | Heavy rain | 10° /2° | 38.4 mm | 0 cm | |
| Dec. 20 | Patchy rain possible | 3° /-1° | 1 mm | 0 cm | |
| Dec. 21 | Light snow | 3° /-3° | 1.5 mm | 0.9 cm | |
| Dec. 22 | Sunny | -2° /-6° | 0 mm | 0 cm | |
| Dec. 23 | Light snow | 1° /-5° | 9.1 mm | 1.4 cm | |
| Dec. 24 | Patchy rain possible | 4° /0° | 0.4 mm | 0.2 cm | |
| Dec. 25 | Light rain | 3° /-2° | 2.9 mm | 0 cm | |
| Dec. 26 | Sunny | -2° /-6° | 0 mm | 0 cm | |
| Dec. 27 |  Heavy snow | 2° /-3° | 17 mm | 12.2 cm | |
| Dec. 28 | Moderate rain | 5° /-2° | 11.4 mm | 0 cm | |
| Dec. 29 |  Heavy rain at times | 11° /4° | 11 mm | 0 cm | |
| Dec. 30 | Moderate rain | 6° /2° | 23.7 mm | 0 cm | |
| Dec. 31 | Overcast | 5° /0° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Long Island in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Long Island forecast closer to your planned date for the most up-to-date weather information.
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Long Island in December - FAQ
What are the expected maximum and minimum temperatures in Long Island during December?
Brace for cold days with temperatures not exceeding 4° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Long Island during December?
Significant rainfall exceeding 306.8 mm is expected in Long Island during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Long Island in December 2026?
Long Island experiences an average snowfall of 19.8 cm during December, occurring over 3 days.
What are the typical wind conditions in Long Island during December?
The average wind speed in Long Island during December is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
Long Island snow forecast December 2026
Track daily snowfall levels and discover Long Island’s snowy potential this December ❄️
On average, Long Island sees 3 snowy days during December, with approximately 19.8 cm of total snowfall.
December rainfall patterns in Long Island
Explore the daily rainfall trends and prepare for Long Islands December weather 💧
Typically, Long Island has 10 rainy days in December with a total of 306.8 mm of rainfall.
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