December
Weather in Connecticut for December 2025
Your guide to Connecticut weather in December - trends and predictions
Snowfall in Connecticut during December is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Connecticut at the beginning of December is 6.3 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 7.6 °F by the end of December.
Connecticut experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 190.6 mm.
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Snow Forecast ❄️
Temperatures
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20
Dry days
10
Rainy days
1
Snow days
7°/3°
Temperatures
21 km/h
Avg max wind
73 %
Avg humidity
Connecticut in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  6° | 2  8° | 3  9° | 4 8° | 5 5° | 6 3° | |
| 7 5° | 8 8° | 9 10° | 10  12° | 11  14° | 12  7° | 13  4° |
| 14 3° | 15 7° | 16 10° | 17 11° | 18 11° | 19  7° | 20 5° |
| 21 3° | 22 0° | 23 3° | 24  4° | 25  6° | 26 6° | 27 7° |
| 28 9° | 29 9° | 30 9° | 31 7° |
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Temperatures trend during December in Connecticut
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Overcast | 6° /2° | 0.8 mm | 0 cm | |
| Dec. 2 | Mist | 8° /3° | 0 mm | 0 cm | |
| Dec. 3 | Moderate rain | 9° /3° | 15.4 mm | 0 cm | |
| Dec. 4 | Overcast | 8° /3° | 0 mm | 0 cm | |
| Dec. 5 | Overcast | 5° /1° | 24.8 mm | 3.4 cm | |
| Dec. 6 | Overcast | 3° /-1° | 0 mm | 0 cm | |
| Dec. 7 | Overcast | 5° /-1° | 0 mm | 0 cm | |
| Dec. 8 | Fog | 8° /1° | 0 mm | 0 cm | |
| Dec. 9 | Mist | 10° /4° | 15.5 mm | 0 cm | |
| Dec. 10 | Light rain shower | 12° /6° | 10.9 mm | 0 cm | |
| Dec. 11 | Light sleet | 14° /5° | 60.6 mm | 0 cm | |
| Dec. 12 | Partly cloudy | 7° /0° | 8.3 mm | 0 cm | |
| Dec. 13 | Sunny | 4° /-1° | 0 mm | 0 cm | |
| Dec. 14 | Partly cloudy | 3° /-1° | 0 mm | 0 cm | |
| Dec. 15 | Sunny | 7° /0° | 0 mm | 0 cm | |
| Dec. 16 | Partly cloudy | 10° /4° | 26.4 mm | 0 cm | |
| Dec. 17 | Light rain shower | 11° /6° | 22.4 mm | 0 cm | |
| Dec. 18 | Light rain shower | 11° /5° | 28.2 mm | 0 cm | |
| Dec. 19 | Light snow | 7° /1° | 5.1 mm | 0 cm | |
| Dec. 20 | Sunny | 5° /0° | 0 mm | 0 cm | |
| Dec. 21 | Sunny | 3° /-1° | 0 mm | 0 cm | |
| Dec. 22 | Partly cloudy | 0° /-4° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | 3° /-3° | 0 mm | 0 cm | |
| Dec. 24 | Light drizzle | 4° /2° | 0.8 mm | 0 cm | |
| Dec. 25 | Cloudy | 6° /1° | 0.1 mm | 0 cm | |
| Dec. 26 | Fog | 6° /1° | 0 mm | 0 cm | |
| Dec. 27 | Patchy rain possible | 7° /3° | 5.5 mm | 0 cm | |
| Dec. 28 | Light drizzle | 9° /4° | 31.1 mm | 0 cm | |
| Dec. 29 | Light rain | 9° /6° | 6.3 mm | 0 cm | |
| Dec. 30 | Patchy rain possible | 9° /5° | 37.2 mm | 0 cm | |
| Dec. 31 | Sunny | 7° /1° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Connecticut 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 Connecticut forecast closer to your planned date for the most up-to-date weather information.
Connecticut in December - FAQ
What are the expected maximum and minimum temperatures in Connecticut during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 3°.
How much rainfall should be expected in Connecticut during December?
Significant rainfall exceeding 190.6 mm is expected in Connecticut during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Connecticut in December 2025?
Connecticut typically sees 3.395 cm of snowfall during December.
What are the typical wind conditions in Connecticut during December?
The average wind speed in Connecticut during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Connecticut snow forecast December 2025
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December rainfall patterns in Connecticut
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