Stamford

Connecticut Weather in October

Average temperatures, rainfall, sunshine and the best places to visit in Connecticut, the United States of America in October.

Thinking about venturing to Connecticut, the United States of America this October and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Connecticut in October

Connecticut, the United States of America is a region in the United States of America. October in Connecticut generally has temperatures that range from mild to pleasant, with precipitation levels ranging from moderate to high.

Temperatures

The average highest temperatures fluctuate between mild in Cornwall Bridge at 16°C (61°F) to pleasant in Stamford at 18°C (64°F). Nighttime temperatures generally drop to 9°C (48°F) in Stamford and 5°C (41°F) in Cornwall Bridge.

For specific regional insights in Connecticut, the United States of America, refer to the map provided below.

Precipitation

In October, precipitation varies across different areas. From moderate rainfall in Stratford with an average of 98 mm (3.9 in) to high rainfall in Torrington with 137 mm (5.4 in).

Average sunshine

October brings good sunshine to many areas. Mystic sees around 208 hours of sunlight, great for visitors looking for bright days.

Explore Connecticut by month

Pick a month to see the average temperature, rainfall and sunshine in Connecticut — and find the best time to visit. (based on Mystic)

Best Places to Visit in Connecticut in October

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

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Connecticut

What is the weather like in October for some of the most popular destinations in Connecticut, the United States of America?

Temperature range in Connecticut (October)

Precipitation variation in Connecticut (October)

Mystic

In October Mystic generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are tolerable that month.

September
October
November
Max temperature
23°C (73°F)
18°C (64°F)
12°C (54°F)
Min temperature
14°C (57°F)
8°C (46°F)
3°C (37°F)
Monthly sun hours
233 hours
208 hours
147 hours
Monthly rainfall
98 mm (3.9 in)
108 mm (4.3 in)
94 mm (3.7 in)
Monthly rainy days
9 days
13 days
10 days
Weather conditions

Danbury

In October Danbury generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

September
October
November
Max temperature
24°C (75°F)
17°C (63°F)
11°C (52°F)
Min temperature
12°C (54°F)
6°C (43°F)
1°C (34°F)
Monthly rainfall
101 mm (4 in)
124 mm (4.9 in)
87 mm (3.4 in)
Monthly rainy days
10 days
13 days
10 days
Weather conditions

Windsor Locks

In October Windsor Locks generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 7°C (45°F) and high monthly rainfall. So on average the conditions are tolerable that month.

September
October
November
Max temperature
25°C (77°F)
18°C (64°F)
12°C (54°F)
Min temperature
13°C (55°F)
7°C (45°F)
1°C (34°F)
Monthly sun hours
223 hours
199 hours
139 hours
Monthly rainfall
103 mm (4.1 in)
124 mm (4.9 in)
85 mm (3.3 in)
Monthly rainy days
9 days
12 days
9 days
Weather conditions

Groton

In October Groton generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are tolerable that month.

September
October
November
Max temperature
23°C (73°F)
18°C (64°F)
12°C (54°F)
Min temperature
14°C (57°F)
8°C (46°F)
3°C (37°F)
Monthly sun hours
223 hours
199 hours
139 hours
Monthly rainfall
104 mm (4.1 in)
107 mm (4.2 in)
93 mm (3.7 in)
Monthly rainy days
10 days
13 days
10 days
Weather conditions

Milford

In October Milford generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are tolerable that month.

September
October
November
Max temperature
25°C (77°F)
18°C (64°F)
12°C (54°F)
Min temperature
15°C (59°F)
9°C (48°F)
3°C (37°F)
Monthly sun hours
223 hours
199 hours
139 hours
Monthly rainfall
92 mm (3.6 in)
101 mm (4 in)
84 mm (3.3 in)
Monthly rainy days
10 days
12 days
10 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Connecticut, in the United States of America.

Popular cities in October

Day & night temperatures, rainfall and average weather in Connecticut in October.

City Weather Day temp Night temp Rainfall
Mystic 18°C (64°F) 8°C (46°F) 108 mm (4.3 in)
Danbury 17°C (63°F) 6°C (43°F) 124 mm (4.9 in)
Windsor Locks 18°C (64°F) 7°C (45°F) 124 mm (4.9 in)
Groton 18°C (64°F) 8°C (46°F) 107 mm (4.2 in)
Milford 18°C (64°F) 9°C (48°F) 101 mm (4 in)
Norwalk 18°C (64°F) 8°C (46°F) 103 mm (4.1 in)

Connecticut weather in October: frequently asked questions

What is the weather like in Connecticut, the United States of America in October?

October in Connecticut, the United States of America brings tolerable weather. In Mystic, daytime temperatures are typically around 18°C (64°F) and nighttime lows hover near 8°C (46°F).

What is the average temperature in Connecticut, the United States of America in October?

Mystic averages a daytime maximum of 18°C (64°F) in October, with overnight lows close to 8°C (46°F).

Does Connecticut, the United States of America get a lot of rain in October?

Mystic typically receives notable rainfall in October, about 108 mm (4.3 in) on average across Connecticut, the United States of America.

Is October a Good Time to Visit Connecticut, the United States of America?

Given the typically tolerable weather conditions in Mystic, October might be a good time to visit Connecticut, the United States of America. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in August and September offering mostly perfect weather in Mystic. 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.

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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.