Connecticut in december: average Weather, Temperature and Climate
Weather in Connecticut in december 2026
The weather in Connecticut in december comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 240.5cm
Weather at 6am
32°F
Clear/Sunny
35% of time
19%
16%
10%
Weather at 12pm
40°F
Clear/Sunny
29% of time
23%
23%
11%
Weather at 6pm
34°F
Clear/Sunny
34% of time
20%
19%
10%
Weather at 3am
32°F
37%
18%
13%
11%
Evolution of daily average temperature and precipitation in Connecticut in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Connecticut in december.
The climate of Connecticut in december is very bad
the weather in Connecticut in december is rather dry (with 6.4in of rainfall over 6 days). The weather is worst than the previous month since in november there is an average of 4.7in of rainfall over 6 days.
The climate is quite more than very fresh around this city the month of december. Plan a sweater! The thermometer averaged maximum of 41°F. The seasonal minimum is 32°F. Thus, the mean temperature average on this month of december in Connecticut is 36°F. Note that these seasonal averages are in contrast with those observed in Connecticut in the month of december with a maximum record of 67°F in 2015 and a minimum record of 5°F in 2017. You can expect to have about 20 days with temperatures down below 32°F, or 65% of the month.
On this month of december, day length in Connecticut is generally 09:11. Sunrise is at 07:12 and sunset is at 16:23.
December: another location in the United States (USA)?
If you want to go to the United States (USA) in december, there are destinations with better weather than Connecticut:
In december, Miami (Florida) has perfect weather.
Furthermore, Hawaii (Honolulu), Houston, Myrtle Beach, Phoenix (Arizona), Carolina Beach and Dauphin Island (Alabama) have good weather.
Finally, California, Louisiana, Atlanta, Dallas, Austin and Big Bend National Park (Texas) have a tolerable climate, but better than Connecticut.
Seasonal average climate and temperature of Connecticut in december
Check below seasonal norms These statistics are generated from the weather statements of the last years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 36°F | ||||
| Highest temperature | 41°F | ||||
| Lowest temperature | 32°F | ||||
| Highest record temperature | 67°F (2015) | ||||
| Lowest record temperature | 5°F (2017) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 20 day(s) (65%) | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 25°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 6.4in | ||||
| Number of days with rainfall | 6 day(s) (21%) | ||||
| Record daily rainfall | 3.4in (2018) | ||||
| Snowfall | 240.5cm | ||||
| Other climate data | |||||
| Humidity | 85% | ||||
| Visibility | 8.42km | ||||
| Cloud cover | 49% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 7 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 07:12 | ||||
| Time of sunset | 16:23 | ||||
| Length of day | 09:11 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Connecticut in december 2025:
34°F to 38°F
29°F to 34°F
27°F to 34°F
31°F to 36°F
16°F to 29°F
29°F to 32°F
31°F to 34°F
25°F to 31°F
16°F to 31°F
29°F to 38°F
29°F to 34°F
22°F to 31°F
23°F to 31°F
27°F to 31°F
16°F to 27°F
22°F to 29°F
25°F to 34°F
27°F to 45°F
45°F to 52°F
25°F to 32°F
34°F to 36°F
23°F to 34°F
31°F to 32°F
34°F to 41°F
27°F to 32°F
13°F to 22°F
18°F to 31°F
20°F to 36°F
40°F to 43°F
25°F to 27°F
22°F to 27°F
Map: other cities in the United States (USA) in december
Cities near Connecticut:
| New York City in december | very bad weather |
| Brooklyn in december | very bad weather |
| Albany in december | very bad weather |
| Rhode Island in december | very bad weather |
| Massachusetts in december | very bad weather |
| Boston in december | very bad weather |
| New Jersey in december | very bad weather |
| Hampton Beach in december | very bad weather |
| Provincetown in december | very bad weather |
| Philadelphia in december | very bad weather |
| Nantucket Island (Massachusetts) in december | very bad weather |
| Cape Cod National Seashore in december | very bad weather |
Click over cities on the map for information about the weather in december.
Connecticut
perfect weather
good
tolerable
bad
very bad
Weather data for Connecticut in december:
Weather data for Connecticut for december are derived from an average of the weather forecast since 2009 in Connecticut. There is a margin of error and these forecasts are to be considered as general information only. The weather in Connecticut can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Connecticut.