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

Monthly weather forecast and climate
Greenwich, CT

The straight road of North Street cutting through the green leafy suburbs of the scenic Greenwich City in Connecticut, a clear skyline
The straight road of North Street cutting through the green leafy suburbs of the scenic Greenwich City in Connecticut, a clear skyline
January, like December, in Greenwich, Connecticut, is another cold winter month, with average temperature fluctuating between 36°F (2.2°C) and 21°F (-6.1°C). With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 21°F (-6.1°C), January is the coldest month. Weather in January »
The last month of the winter, February, is another cold month in Greenwich, Connecticut, with temperature in the range of an average low of 23°F (-5°C) and an average high of 37.9°F (3.3°C). In Greenwich, the average high-temperature is relatively the same as in January - a still cold 37.9°F (3.3°C). Weather in February »

March, the first month of the spring, in Greenwich, is a frosty month, with average temperature ranging between max 46.9°F (8.3°C) and min 30.9°F (-0.6°C). In Greenwich, the average high-temperature rises, from a cold 37.9°F (3.3°C) in February, to a chilly 46.9°F (8.3°C). Weather in March »

April in Greenwich, Connecticut, is a mild spring month, with average temperature fluctuating between 57.9°F (14.4°C) and 39.9°F (4.4°C). In Greenwich, the average high-temperature increases, from a frosty 46.9°F (8.3°C) in March, to a mild 57.9°F (14.4°C). Weather in April »

May, the last month of the spring, in Greenwich, is a pleasant month, with average temperature fluctuating between 50°F (10°C) and 69.1°F (20.6°C). In May, the average high-temperature increases, from a moderate 57.9°F (14.4°C) in April, to a pleasant 69.1°F (20.6°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Greenwich, Connecticut, with average temperature ranging between min 60.1°F (15.6°C) and max 77°F (25°C). In Greenwich, the average high-temperature in June marginally rises, from an agreeable 69.1°F (20.6°C) in May, to a moderately hot 77°F (25°C). Weather in June »

July, the same as June, is another warm summer month in Greenwich, Connecticut, with average temperature fluctuating between 64.9°F (18.3°C) and 82.9°F (28.3°C). With an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 64.9°F (18.3°C), July is the warmest month. Weather in July »

The last month of the summer, August, is also a moderately hot month in Greenwich, Connecticut, with average temperature fluctuating between 64°F (17.8°C) and 81°F (27.2°C). In Greenwich, the average high-temperature is relatively the same as in July - a still moderately hot 81°F (27.2°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Greenwich, Connecticut, with average temperature varying between 73°F (22.8°C) and 55.9°F (13.3°C). In September, the average high-temperature slightly decreases, from a warm 81°F (27.2°C) in August, to a pleasant 73°F (22.8°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Greenwich, Connecticut, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 45°F (7.2°C). In October, the average high-temperature decreases, from an agreeable 73°F (22.8°C) in September, to an enjoyable 62.1°F (16.7°C). Weather in October »

November, the last month of the autumn, in Greenwich, is another cool month, with temperature in the range of an average high of 51.1°F (10.6°C) and an average low of 36°F (2.2°C). In November, the average high-temperature drops, from a comfortable 62.1°F (16.7°C) in October, to a cool 51.1°F (10.6°C). Weather in November »

The first month of the winter, December, is still a cold month in Greenwich, Connecticut, with average temperature ranging between max 41°F (5°C) and min 27°F (-2.8°C). In December, the average high-temperature drops, from a cool 51.1°F (10.6°C) in November, to a wintry 41°F (5°C). Weather in December »

What is the coldest month in Greenwich?

The coldest month in Greenwich is January, with an average high-temperature of 36°F (2.2°C) and an average low-temperature of 21°F (-6.1°C).

How much does it rain in Greenwich?

During the entire year, Greenwich aggregates up to 50.4" (1281.4mm) of precipitation.

When does it snow in Greenwich?

Months with snowfall are January through April, November and December.

How much does it snow in Greenwich?

In Greenwich, Connecticut, during the entire year, snow aggregates up to 27.7" (703.7mm).

What is the driest month in Greenwich?

The month with the least rainfall in Greenwich, Connecticut, is February when 3.2" (82.3mm) of precipitation is typically aggregated.

What is the snowiest month in Greenwich?

The month with the most snowfall in Greenwich is February when 8.3" (210.8mm) of snow is typically aggregated.

When is the ocean coldest in Greenwich?

With an average ocean temperature of 39.4°F (4.1°C), February is the month with the coldest seawater in Greenwich, 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 wettest month in Greenwich?

The month with the most rainfall is March when 4.7" (120.1mm) of precipitation is typically aggregated.

When are the longest days in Greenwich?

With an average of 15.1h of daylight, June has the longest days of the year in Greenwich, Connecticut.

What is the warmest month in Greenwich?

With an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 64.9°F (18.3°C), July is the warmest month in Greenwich, Connecticut.

When is the ocean warmest in Greenwich?

The month with the warmest seawater is August, with an average ocean temperature of 73°F (22.8°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73°F (22.8°C) water may be enjoyable.

What is the month with the shortest days in Greenwich?

With an average of 9.3h of daylight, December has the shortest days of the year in Greenwich.
Average rainfall - Greenwich, CT
Average snowfall - Greenwich, CT
Average sea temperature - Greenwich, CT

The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).

Average daylight - Greenwich, CT

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).