Temperature in Connecticut in January

Daytime highs, nighttime lows and the warmest cities in Connecticut, the United States of America this January.

Connecticut, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in January ranging from 1°C (34°F) in Cornwall Bridge to 4°C (39°F) in Old Saybrook. Nighttime temperatures generally drop to -5°C (23°F) in Old Saybrook and -9°C (16°F) in Cornwall Bridge. January falls during the winter season.

What is the temperature of the different cities in Connecticut, the United States of America in January?

Discover the typical January temperatures for the most popular locations of Connecticut on the map below. Detailed insights are just a click away.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Connecticut, check out our Connecticut's climate page.

See also: Connecticut weather by month.

Best Places to Visit in Connecticut in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Connecticut.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in January: blue is cold, red is hot.

See all January weather averages, cities and regions in Connecticut

Connecticut temperatures in January: frequently asked questions

How hot does it get in Connecticut, the United States of America in January?

Average daytime highs in Connecticut, the United States of America during January reach about 4°C (39°F) in Mystic.

How cold does it get at night in Connecticut, the United States of America in January?

Nighttime temperatures in Mystic typically drop to around -5°C (23°F) in January.

What is the warmest city in January in Connecticut, the United States of America?

According to our recent database analysis, Old Saybrook is the warmest city. It experiences an average maximum daytime temperature of approximately 4°C (39°F) and rarely drops below -5°C (23°F) during the night.

What is the coldest city in January in Connecticut, the United States of America?

The coldest city in January in Connecticut, the United States of America is Cornwall Bridge when we check our database. The maximum daytime temperatures are around 1°C (34°F) and minimum nighttime temperatures fall around -9°C (16°F).

How much sun does Connecticut, the United States of America get in January?

Most cities enjoy a balanced amount of sunshine, with around 170 hours of sunlight anticipated in Mystic. This ensures the days are neither too dim nor excessively sunny.

Interested in more climate information?

We have much more information about the climate in Connecticut.

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