Hartford Weather in December
Hartford in December sees low temperatures, with highs around 6°C (43°F) and overnight lows of -3°C (27°F). Snow/rainfall is fairly high at around 119 mm (4.7 in) on average, so pack waterproofs just in case.
Rainfall in Hartford in December
You can expect snow/rain on around 12 days based on historical patterns, with 119 mm (4.7 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Hartford in December
Temperatures in Hartford in December top out at 6°C (43°F) and drop to -3°C (27°F) overnight. The winter season takes place during December. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With lows of -3°C (27°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.
Sunshine in Hartford in December
The city usually sees around 139 hours of sunlight, indicating a moderately sunny period.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and September typically offer the best weather for Hartford.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hartford's climate page.
Hartford Temperature in December
Min Temperature
-3°C (27°F)
Max Temperature
6°C (43°F)
Chance of Rain
40%
Precipitation
119 mm (4.7 in)
Rainy days
12 days
Humidity
68%
Sunshine
139 hours
Percentage Sunshine
49%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hartford typically drop from around 7°C (45°F) at the start of December to approximately 4°C (39°F) by the end. Nights are very cold, with lows typically ranging from -5°C (23°F) to -1°C (30°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Hartford in December
Browse day-by-day weather records for Hartford spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hartford historical weather extremes in December
Based on 49 years of weather observations in Hartford between 1976 and 2025, these are the recorded extremes.
- On December 6, 2001, temperatures climbed to 23°C (73°F), marking the warmest December day on record.
- The heaviest December precipitation occurred on December 25, 2020, when 63 mm (2.5 in) of precipitation fell.
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Hartford in December
We recommend to layer up for chilly conditions in Hartford in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Hartford in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hartford's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hartford climate overview or explore weather in the United States of America.
