New Haven County (New Haven)
December
Weather in New Haven County, Connecticut for December 2026
Your guide to New Haven County weather in December - trends and predictions
With an average of 2 snowy days, New Haven County usually enjoys a light touch of snow in December.
New Haven County experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 283.6 mm.
Is December a good time to visit New Haven County? check out the best time to travel to New Haven County page.
✨ Is December a good time to visit New Haven County? – Ask the AI Weatherman
Snow Forecast ❄️
Rain 🌧️
More
19
Dry days
10
Rainy days
2
Snow days
3°/-2°
Temperatures
25 km/h
Avg max wind
75 %
Avg humidity
New Haven County Weather December
Move between months or click on a day
Temperatures trend during December in New Haven County
See the weather trend as well as the moving average line
December weather in New Haven County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Patchy rain possible | 4° /-1° | 1.7 mm | 0 cm | |
| Dec. 2 |  Heavy rain | 5° /-1° | 66.6 mm | 0 cm | |
| Dec. 3 |  Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 4 |  Overcast | 4° /-2° | 0.6 mm | 0 cm | |
| Dec. 5 |  Moderate rain | 2° /-4° | 15.4 mm | 0 cm | |
| Dec. 6 | Overcast | 1° /-2° | 0 mm | 0 cm | |
| Dec. 7 | Partly cloudy | 3° /-1° | 0.1 mm | 0 cm | |
| Dec. 8 | Overcast | 5° /-2° | 0.2 mm | 0 cm | |
| Dec. 9 |  Moderate or heavy rain shower | 5° /-3° | 9.2 mm | 0 cm | |
| Dec. 10 |  Light rain | 8° /3° | 6.2 mm | 0 cm | |
| Dec. 11 | Heavy rain | 8° /3° | 38.8 mm | 0 cm | |
| Dec. 12 |  Light snow | 4° /-3° | 4.8 mm | 2 cm | |
| Dec. 13 |  Sunny | 1° /-3° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 0° /-4° | 0 mm | 0 cm | |
| Dec. 15 | Overcast | 0° /-6° | 0 mm | 0 cm | |
| Dec. 16 | Moderate rain | 5° /0° | 12.5 mm | 0 cm | |
| Dec. 17 | Moderate rain | 7° /3° | 11.7 mm | 0 cm | |
| Dec. 18 | Light rain | 7° /0° | 3.4 mm | 0 cm | |
| Dec. 19 | Heavy rain | 9° /1° | 40 mm | 0 cm | |
| Dec. 20 | Patchy rain possible | 2° /-1° | 0.2 mm | 0 cm | |
| Dec. 21 |  Light freezing rain | 2° /-3° | 0.6 mm | 0 cm | |
| Dec. 22 | Sunny | -2° /-7° | 0 mm | 0 cm | |
| Dec. 23 | Light snow | 0° /-5° | 7 mm | 3.3 cm | |
| Dec. 24 | Patchy rain possible | 4° /-1° | 0.4 mm | 0.2 cm | |
| Dec. 25 | Sunny | 2° /-3° | 0 mm | 0 cm | |
| Dec. 26 | Sunny | -2° /-7° | 0 mm | 0 cm | |
| Dec. 27 |  Heavy snow | 1° /-6° | 17.2 mm | 12.5 cm | |
| Dec. 28 | Moderate rain | 4° /-3° | 10.7 mm | 0 cm | |
| Dec. 29 |  Heavy rain at times | 9° /3° | 9.8 mm | 0 cm | |
| Dec. 30 | Heavy rain | 6° /2° | 26.3 mm | 0 cm | |
| Dec. 31 |  Fog | 4° /-1° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for New Haven 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 New Haven County forecast closer to your planned date for the most up-to-date weather information.
Change Month
New Haven County in December - FAQ
What are the expected maximum and minimum temperatures in New Haven County during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in New Haven County during December?
Significant rainfall exceeding 283.6 mm is expected in New Haven County during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in New Haven County in December 2026?
New Haven County experiences an average snowfall of 18 cm during December, occurring over 2 days.
What are the typical wind conditions in New Haven County during December?
The average wind speed in New Haven County during December is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
New Haven County snow forecast December 2026
Track daily snowfall levels and discover New Haven County’s snowy potential this December ❄️
On average, New Haven County sees 2 snowy days during December, with approximately 18 cm of total snowfall.
December rainfall patterns in New Haven County
Explore the daily rainfall trends and prepare for New Haven Countys December weather 💧
Typically, New Haven County has 10 rainy days in December with a total of 283.6 mm of rainfall.
Top locations in New Haven County
Select a location for an accurate weather forecast
More Locations Quick links
More New Haven County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.