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United States weather

Weather in Suffolk County, New York for December 2025

Your guide to Suffolk County weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Suffolk County usually enjoys a light touch of snow in December.
    According to Suffolk County snow forecast for December 2025, 4 snowy days are expected in the next 2 weeks. The closest date with snow is Saturday, December 13.

    • Temperatures

  • Until now, December 2025 in Suffolk County is slightly cooler than the historical average by -1.4 °F.

  • The forecast for the upcoming days in Suffolk County predicts a temperature of 6.9 °F, which is slightly above the historical average.

  • In general, the average temperature in Suffolk County at the beginning of December is 4.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 9.1 °F by the end of December.

    • Rain 🌧️

  • The climate of Suffolk County in December is notably wet, with an average of 13 rainy days, and a total of 301.2 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
15
Dry days
Average rainy days
13
Rainy days
Average snowy days
3
Snow days
Average temperatures
5°/0°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Suffolk County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
4°
2
Sunny
6°
3
Sunny
3°
4
Overcast
6°
5
Moderate or heavy rain shower
4°
6
Cloudy
2°
7
Sunny
4°
8
Overcast
5°
9
Moderate or heavy rain shower
6°
10
Overcast
10°
11
Moderate or heavy rain shower
9°
12
Partly cloudy
3°
13
Light freezing rain
7°
14
Moderate snow
1°
15
Partly cloudy
-1°
16
Partly cloudy
1°
17
Partly cloudy
6°
18
Partly cloudy
11°
19
Patchy rain possible
9°
20
Patchy rain possible
7°
21
Patchy rain possible
7°
22
Partly cloudy
6°
23
Patchy rain possible
10°
24
Patchy rain possible
16°
25
Partly cloudy
5°
26
Patchy rain possible
12°
27
Partly cloudy
4°
28
Moderate or heavy rain shower
9°
29
Heavy rain at times
12°
30
Moderate or heavy rain shower
12°
31
Overcast
10°

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

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-2° 2.5 mm 0 cm
Dec. 2 Sunny
Sunny
 6° /-1° 68.8 mm 0 cm
Dec. 3 Sunny
Sunny
 3° /0° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 6° /-2° 0.6 mm 0 cm
Dec. 5 Moderate or heavy rain shower
Moderate or heavy rain shower
 4° /-3° 16.6 mm 0 cm
Dec. 6 Cloudy
Cloudy
 2° /-1° 0 mm 0 cm
Dec. 7 Sunny
Sunny
 4° /-1° 0.1 mm 0 cm
Dec. 8 Overcast
Overcast
 5° /-2° 0 mm 0 cm
Dec. 9 Moderate or heavy rain shower
Moderate or heavy rain shower
 6° /-2° 9.2 mm 0 cm
Dec. 10 Overcast
Overcast
 10° /4° 4.1 mm 0 cm
Dec. 11 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /4° 48.8 mm 0 cm
Dec. 12 Partly cloudy
Partly cloudy
 3° /-2° 5.5 mm 2.3 cm
Dec. 13 Light freezing rain
Light freezing rain
 7° /-5° 0.2 mm 0.2 cm
Dec. 14 Moderate snow
Moderate snow
 1° /-4° 19.1 mm 11.5 cm
Dec. 15 Partly cloudy
Partly cloudy
 -1° /-7° 0 mm 0 cm
Dec. 16 Partly cloudy
Partly cloudy
 1° /-2° 0 mm 0 cm
Dec. 17 Partly cloudy
Partly cloudy
 6° /1° 0 mm 0 cm
Dec. 18 Partly cloudy
Partly cloudy
 11° /6° 0.1 mm 0 cm
Dec. 19 Patchy rain possible
Patchy rain possible
 9° /7° 1.6 mm 0 cm
Dec. 20 Patchy rain possible
Patchy rain possible
 7° /6° 0.3 mm 0 cm
Dec. 21 Patchy rain possible
Patchy rain possible
 7° /5° 1.7 mm 0 cm
Dec. 22 Partly cloudy
Partly cloudy
 6° /4° 0 mm 0 cm
Dec. 23 Patchy rain possible
Patchy rain possible
 10° /7° 0.4 mm 0 cm
Dec. 24 Patchy rain possible
Patchy rain possible
 16° /8° 0.1 mm 0 cm
Dec. 25 Partly cloudy
Partly cloudy
 5° /4° 0.1 mm 0 cm
Dec. 26 Patchy rain possible
Patchy rain possible
 12° /7° 4.2 mm 0 cm
Dec. 27 Partly cloudy
Partly cloudy
 4° /-3° 0 mm 0 cm
Dec. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /1° 22.7 mm 0 cm
Dec. 29 Heavy rain at times
Heavy rain at times
 12° /7° 2.9 mm 0 cm
Dec. 30 Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /6° 47.4 mm 0 cm
Dec. 31 Overcast
Overcast
 10° /4° 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 5° 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 301.2 mm is expected in Suffolk County during December, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Suffolk County in December 2025?
Suffolk County experiences an average snowfall of 6.78 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 22 km/h, suggesting breezy to windy conditions, depending on your activities.

Suffolk County snow forecast December 2025

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 6.8 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 13 rainy days in December with a total of 301.2 mm of rainfall.
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Location coordinates Where is Suffolk County?

Get accurate weather forecasts for Suffolk County, located at latitude 40.817 and longitude -73.066. Stay updated with localized weather information tailored for Suffolk County.

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