Suffolk County (Long Island)
December
Weather in Suffolk County, New York for December 2026
Your guide to Suffolk County weather in December - trends and predictions
With an average of 3 snowy days, Suffolk County usually enjoys a light touch of snow in December.
Suffolk County 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 Suffolk County? check out the best time to travel to Suffolk County page.
✨ Is December a good time to visit Suffolk County? – 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
Suffolk County Weather December
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Temperatures trend during December in Suffolk County
See the weather trend as well as the moving average line
December weather in Suffolk County 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 Suffolk County 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 Suffolk County forecast closer to your planned date for the most up-to-date weather information.
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Suffolk County in December - FAQ
What are the expected maximum and minimum temperatures in Suffolk County 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 Suffolk County during December?
Significant rainfall exceeding 306.8 mm is expected in Suffolk County during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Suffolk County in December 2026?
Suffolk County experiences an average snowfall of 19.8 cm during December, occurring over 3 days.
What are the typical wind conditions in Suffolk County during December?
The average wind speed in Suffolk County during December is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
Suffolk County snow forecast December 2026
Track daily snowfall levels and discover Suffolk County’s snowy potential this December ❄️
On average, Suffolk County sees 3 snowy days during December, with approximately 19.8 cm of total snowfall.
December rainfall patterns in Suffolk County
Explore the daily rainfall trends and prepare for Suffolk Countys December weather 💧
Typically, Suffolk County has 10 rainy days in December with a total of 306.8 mm of rainfall.
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