Mystic
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Mystic, CT

January, like December, in Mystic, Connecticut, is a wintry winter month, with average temperature fluctuating between 19.4°F (-7°C) and 35.6°F (2°C). January is the coldest month, with an average high-temperature of 35.6°F (2°C) and an average low-temperature of 19.4°F (-7°C). Weather in January »
The last month of the winter, February, is another cold month in Mystic, Connecticut, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 37.4°F (3°C). In February, the average high-temperature is essentially the same as in January - a still wintry 37.4°F (3°C). Weather in February »

March, the first month of the spring, in Mystic, is a frosty month, with average temperature varying between 46.4°F (8°C) and 28.4°F (-2°C). In March, the average high-temperature rises, from a cold 37.4°F (3°C) in February, to a frosty 46.4°F (8°C). Weather in March »

April is a mild spring month in Mystic, Connecticut, with average temperature varying between 37.4°F (3°C) and 55.4°F (13°C). In Mystic, the average high-temperature increases, from a frosty 46.4°F (8°C) in March, to a mild 55.4°F (13°C). Weather in April »

May, the last month of the spring, in Mystic, is an enjoyable month, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 46.4°F (8°C). In Mystic, Connecticut, the average high-temperature in May rises, from a mild 55.4°F (13°C) in April, to a comfortable 66.2°F (19°C). Weather in May »

June, the first month of the summer, in Mystic, is a moderately hot month, with average temperature fluctuating between 73.4°F (23°C) and 55.4°F (13°C). In June, the average high-temperature slightly increases, from a comfortable 66.2°F (19°C) in May, to a warm 73.4°F (23°C). Weather in June »

July, the same as June, is another warm summer month in Mystic, Connecticut, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 80.6°F (27°C). July is the warmest month, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 62.6°F (17°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Mystic, Connecticut, with average temperature varying between 60.8°F (16°C) and 78.8°F (26°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 78.8°F (26°C). Weather in August »

September, the first month of the autumn, in Mystic, is still a pleasant month, with average temperature fluctuating between 71.6°F (22°C) and 53.6°F (12°C). In Mystic, the average high-temperature marginally drops, from a moderately hot 78.8°F (26°C) in August, to an agreeable 71.6°F (22°C). Weather in September »

October, like September, in Mystic, Connecticut, is another enjoyable autumn month, with average temperature ranging between min 44.6°F (7°C) and max 62.6°F (17°C). In October, the average high-temperature drops, from an agreeable 71.6°F (22°C) in September, to an enjoyable 62.6°F (17°C). Weather in October »

November, the last month of the autumn, in Mystic, is another cool month, with average temperature varying between 51.8°F (11°C) and 35.6°F (2°C). In Mystic, the average high-temperature decreases, from an enjoyable 62.6°F (17°C) in October, to a cool 51.8°F (11°C). Weather in November »

December, the first month of the winter, in Mystic, is still a cold month, with average temperature fluctuating between 24.8°F (-4°C) and 41°F (5°C). In December, the average high-temperature decreases, from a cool 51.8°F (11°C) in November, to a cold 41°F (5°C). Weather in December »

What is the coldest month in Mystic?

The coldest month is January, with an average high-temperature of 35.6°F (2°C) and an average low-temperature of 19.4°F (-7°C).

How much does it rain in Mystic?

In Mystic, during the entire year, the rain falls for 122 days and collects up to 48.1" (1222mm) of precipitation.

What is the month with the coldest ocean in Mystic?

With an average ocean temperature of 37.9°F (3.3°C), February is the month with the coldest seawater in Mystic, Connecticut. For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the month with the most sunshine in Mystic?

Months with the most sunshine in Mystic are May through July, with an average of 9h of sunshine.

What is the driest month in Mystic?

The month with the least rainfall in Mystic, Connecticut, is June when the rain falls for 11 days and typically collects 3.3" (84mm) of precipitation.

When are the longest days in Mystic?

The month with the longest days in Mystic, Connecticut, is June, with an average of 15.1h of daylight.

What are the months with the highest UV index in Mystic?

June through August, with an average maximum UV index of 8, are months with the highest UV index.

What is the warmest month in Mystic?

With an average high-temperature of 80.6°F (27°C) and an average low-temperature of 62.6°F (17°C), July is the warmest month.

What is the month with the warmest ocean in Mystic?

The month with the warmest seawater in Mystic is August, with an average ocean temperature of 70.3°F (21.3°C). Swimming in 70.3°F (21.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the rainiest month in Mystic?

The month with the most rainfall is November when the rain falls for 11 days and typically aggregates up to 4.8" (123mm) of precipitation.

What is the month with the least sunshine in Mystic?

November and December, with an average of 5h of sunshine, are months with the least sunshine in Mystic, Connecticut.

What is the month with the shortest days in Mystic?

With an average of 9.2h of daylight, December has the shortest days of the year.

What is the month with the lowest UV index in Mystic?

December is the month with the lowest UV index in Mystic, Connecticut, with an average maximum UV index of 1.
Average rainfall - Mystic, CT
Average rainfall days - Mystic, CT

The month with the highest number of rainy days is December (12 days).
Months with the lowest number of rainy days are September and October (8 days).

Average sea temperature - Mystic, CT

The best month for swimming (with the highest average sea temperature) is August (70.3°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

Average daylight / Average sunshine - Mystic, CT