Connecticut (Hartford)
December
Weather in Connecticut for December 2025
Your guide to Connecticut weather in December - trends and predictions
With an average of 3 snowy days, Connecticut usually enjoys a light touch of snow in December.
In general, the average temperature in Connecticut at the beginning of December is 2.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 4.3 °F by the end of December.
Connecticut experiences moderate rainfall in December, with an average of 9 rainy days and a total precipitation of 350.7 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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19
Dry days
9
Rainy days
3
Snow days
3°/-2°
Temperatures
15 km/h
Avg max wind
77 %
Avg humidity
Connecticut Weather December
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  1° | 2  3° | 3  4° | 4  2° | 5  2° | 6 0° | |
| 7 3° | 8  7° | 9  3° | 10  8° | 11  16° | 12 9° | 13 1° |
| 14 0° | 15 0° | 16  5° | 17  10° | 18 6° | 19 4° | 20 1° |
| 21 0° | 22 -4° | 23 -4° | 24 0° | 25 0° | 26 2° | 27 -2° |
| 28  2° | 29 9° | 30  11° | 31 8° |
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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 | Cloudy | 1° /-2° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 3° /-2° | 0 mm | 0 cm | |
| Dec. 3 | Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 5 | Heavy snow | 2° /0° | 51.3 mm | 8.6 cm | |
| Dec. 6 | Overcast | 0° /-3° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | 3° /-3° | 0 mm | 0 cm | |
| Dec. 8 | Light sleet | 7° /0° | 5.3 mm | 1.6 cm | |
| Dec. 9 | Moderate or heavy rain shower | 3° /2° | 29.5 mm | 0 cm | |
| Dec. 10 | Fog | 8° /2° | 3.6 mm | 0 cm | |
| Dec. 11 | Heavy rain | 16° /9° | 92.2 mm | 0 cm | |
| Dec. 12 | Overcast | 9° /-2° | 28.5 mm | 0 cm | |
| Dec. 13 | Sunny | 1° /-4° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 0° /-6° | 0 mm | 0 cm | |
| Dec. 15 | Overcast | 0° /-6° | 0 mm | 0 cm | |
| Dec. 16 | Light rain | 5° /-1° | 7.2 mm | 0 cm | |
| Dec. 17 | Moderate rain | 10° /5° | 18.9 mm | 0 cm | |
| Dec. 18 | Overcast | 6° /1° | 1.5 mm | 0 cm | |
| Dec. 19 | Light rain | 4° /0° | 19.5 mm | 0 cm | |
| Dec. 20 | Overcast | 1° /0° | 0 mm | 0 cm | |
| Dec. 21 | Overcast | 0° /-4° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | -4° /-11° | 0 mm | 0 cm | |
| Dec. 23 | Cloudy | -4° /-10° | 0 mm | 0 cm | |
| Dec. 24 | Overcast | 0° /-4° | 0 mm | 0 cm | |
| Dec. 25 | Sunny | 0° /-6° | 0 mm | 0 cm | |
| Dec. 26 | Sunny | 2° /-5° | 0 mm | 0 cm | |
| Dec. 27 | Mist | -2° /-8° | 0 mm | 0 cm | |
| Dec. 28 | Patchy moderate snow | 2° /-1° | 23.3 mm | 1 cm | |
| Dec. 29 | Fog | 9° /3° | 0 mm | 0 cm | |
| Dec. 30 | Moderate or heavy rain with thunder | 11° /5° | 69.9 mm | 0 cm | |
| Dec. 31 | Overcast | 8° /3° | 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?
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 Connecticut during December?
Significant rainfall exceeding 350.7 mm is expected in Connecticut during December, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Connecticut in December 2025?
Connecticut experiences an average snowfall of 11.17 cm during December, occurring over 3 days.
What are the typical wind conditions in Connecticut during December?
The average wind speed in Connecticut during December is 15 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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