What’s the climate like in Connecticut?
The current climate of Connecticut features average monthly temperatures ranging from highs of 29°C during the day to lows of 3°C. The average yearly temperature is around 16°C. At night, temperatures in the colder months average around -6°C and in the warmer months around 18°C.
The highest temperature recorded in Connecticut in recent years was 37°C in June 2017. The lowest daytime temperature recorded was -13°C in February 2016.
On average, Connecticut gets 1191 mm of precipitation each year. Of this, about 81 cm is snowfall. For comparison, UK gets 701 mm of precipitation each year.
The climate of Connecticut is based on weather data from . Other spots, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Connecticut for a full picture of the climate.
Best time to visit Connecticut?
The best time to visit Connecticut for sunny weather is May through July and September. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Connecticut. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Connecticut
The climate table of Connecticut shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 3 | 4 | 8 | 15 | 21 | 25 | 29 | 28 | 24 | 18 | 11 | 6 |
| Temp. min (°C) | -5 | -6 | -1 | 5 | 10 | 15 | 19 | 18 | 14 | 8 | 1 | -1 |
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| Precipitation (mm) | 116 | 65 | 61 | 100 | 80 | 53 | 93 | 145 | 104 | 193 | 75 | 106 |
| Snow (cm) | 25 | 27 | 14 | 1,4 | 0 | 0 | 0 | 0 | 0 | 1,0 | 1,2 | 12 |
| UV Index | 3 | 4 | 4 | 6 | 7 | 7 | 7 | 7 | 4 | 3 | 2 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 16°C
- Highest temperature: 29°C in July
- Lowest temperature: 3°C in January
- Precipitation*: 1191 mm per year, averaging 99 mm per month
- Snowfall: 81 cm per year
- Driest months: 53 mm in June, 61 mm in March and 65 mm in February
- Wettest months: 193 mm in October, 145 mm in August and 116 mm in January
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Connecticut
This graph shows the average maximum temperatures per month in Connecticut, United States. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Connecticut
This graph shows how much precipitation Connecticut, United States, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Connecticut
This graph shows how much snow Connecticut, United States, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Connecticut
This graph shows the average UV index per month in Connecticut, United States. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Connecticut
This graph shows the average yearly temperature in Connecticut, United States. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Connecticut
This chart shows the total yearly precipitation in Connecticut, United States, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Connecticut
This chart shows the total yearly snowfall in Connecticut, United States, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Connecticut
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Average Weather in Connecticut by Month
Click on a month below to see detailed weather info for Connecticut. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
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