Weather in September in Connecticut
Considering a trip to Connecticut this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:
What is the weather like in Connecticut in September?
Connecticut is a region in the United States of America. September in Connecticut generally has warm temperatures, with precipitation levels ranging from moderate to high.
Temperatures
The average maximum temperatures are warm and range from 23°C in Cornwall Bridge to 25°C in East Hartford. Nighttime temperatures generally drop to 14°C in East Hartford and 11°C in Cornwall Bridge.
Precipitation
In September, precipitation varies across different areas. From moderate rainfall in Manchester with an average of 81 mm to high rainfall in Old Saybrook with 115 mm.Average sunshine
Meanwhile, Stamford enjoys close to 218 hours of sunlight. This means it's a great month if you prefer bright and sunny days.For a closer look at September's conditions in Connecticut, see the map below. For a more detailed look at Connecticut's yearly weather, check out our Connecticut climate page.
Where to go in Connecticut in September
perfect weather
pleasant
tolerable
unpleasant
poor
Popular destinations
What is the weather like in September for the 5 most popular destinations in Connecticut?
Stamford
In September Stamford generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are perfect that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Mystic
In September Mystic generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Windsor Locks
In September Windsor Locks generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 13°C and high monthly rainfall. So on average the conditions are pleasant that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Danbury
In September Danbury generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 12°C and high monthly rainfall. So on average the conditions are pleasant that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Groton
In September Groton generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 14°C and high monthly rainfall. So on average the conditions are pleasant that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Is your destination not in the list? Have a look at other destinations in Connecticut, in the United States of America.
Is September the best time to visit Connecticut?
We believe that September is one of the best times to visit Connecticut with overall perfect weather in Stamford. It's worth noting that weather conditions might differ depending on the location you visit.
On average, the best time to visit Connecticut is in May and September with generally perfect weather in Stamford. In contrast, January, February, March and December tend to have poor weather conditions.
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.
Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.