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Connecticut United States of America
Temperatures in December
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Connecticut temperatures in December

Connecticut is a region in the United States of America. In December the average maximum daytime temperatures are low and range from 4°C in Cornwall Bridge to 8°C in Old Saybrook. Nighttime temperatures generally drop to -1°C in Old Saybrook and -5°C in Cornwall Bridge. December falls during the winter season.

What is the temperature of the different cities in Connecticut in December?

Explore the map below to discover average December temperatures at the top destinations in Connecticut. For a deeper dive, simply click on any destination dot.

Weather conditions Weather
Temperatures
Precipitation
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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in December in Connecticut?
    • Based on our systematic data collection, Old Saybrook has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 8°C, while at night is goes down to an approximate temperature of -1°C."

  • What is the coldest city in December in Connecticut?
    • According to our data, Cornwall Bridge holds the title for the coldest city in Connecticut in December. It experiences maximum temperatures of approximately 4°C and drops to lows of about -5°C during the night.

  • How much sun does Connecticut get in December?
    • The city Stamford usually sees around 141 hours of sunlight, indicating a moderately sunny period.

    Interested in more climate information?

    We have much more information about the climate in Connecticut. Interested in the weather conditions in a specific month? Select the month below.

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