Norwich (CT) Weather & Climate: Best Time to Visit

The climate in Norwich is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a chilly 3°C (37°F) in January.

Nighttime temperatures range from 18°C (64°F) in July to -7°C (19°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Norwich has a notably wet climate with abundant precipitation, recording 1332 mm (52 in) of rain/snowfall per year. The wettest period in Norwich occurs in March, which receives around 132 mm (5.2 in) of precipitation. During the driest month, January, Norwich experiences moderate snow/rainfall, totaling 91 mm (3.6 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Norwich Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Norwich, summer days are longer and more sunny, with daily sunshine hours peaking at 9.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 4.6 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Norwich.

The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year