March 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
The straight road of North Street cutting through the green leafy suburbs of the scenic Greenwich City in Connecticut

Weather in March

March, the first month of the spring, in Greenwich, is a chilly month, with average temperature varying between 45°F (7.2°C) and 33.8°F (1°C).

Temperature

In March, the average high-temperature slightly increases, from a cold 38.3°F (3.5°C) in February, to a frosty 45°F (7.2°C). In Greenwich, the average low-temperature is 33.8°F (1°C).

Humidity

In March, the average relative humidity is 73%.

Rainfall

In March, in Greenwich, the rain falls for 12.8 days. Throughout March, 2.83" (72mm) of precipitation is accumulated. In Greenwich, Connecticut, during the entire year, the rain falls for 165.6 days and collects up to 37.64" (956mm) of precipitation.

Snowfall

Months with snowfall in Greenwich are January through April, November and December. In Greenwich, during 5 snowfall days, 2.36" (60mm) of snow is typically accumulated. Throughout the year, there are 25.5 snowfall days, and 8.78" (223mm) of snow is accumulated.

Ocean temperature

In Greenwich, in March, the average water temperature is 39.7°F (4.3°C).
Note: 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.

Daylight

The average length of the day in March is 12h.

Sunshine

In Greenwich, the average sunshine in March is 6.2h.

UV index

Months with the lowest UV index in Greenwich are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in March interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in March in Greenwich?

In Greenwich, the average relative humidity in March is 73%.

How many days does it rain in March in Greenwich?

In Greenwich, in March, during 12.8 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

How many days does it snow in March in Greenwich?

In Greenwich, in March, snow falls for 5 days, with typically accumulated 2.36" (60mm) of snow.

What is the ocean temperature in March in Greenwich?

In Greenwich, the average seawater temperature in March is 39.7°F (4.3°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average length of the day in March in Greenwich?

The average length of the day in March in Greenwich is 12h.

How many hours of sunshine does Greenwich have in March?

The average sunshine in March in Greenwich, Connecticut, is 6.2h.

What are the months with the lowest UV index in Greenwich?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Greenwich.

What is the UV index reading in March in Greenwich?

In Greenwich, Connecticut, the average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.

Average temperature in March
Greenwich, CT

Average temperature in March - Greenwich, CT
  • Average high temperature in March: 45°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in March: 33.8°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in March
Greenwich, CT

Average pressure in March - Greenwich, CT
  • Average pressure in March: 30.05"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in March
Greenwich, CT

Average wind speed in March - Greenwich, CT
  • Average wind speed in March: 9.7mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in March
Greenwich, CT

Average humidity in March - Greenwich, CT
  • Average humidity in March: 73%

Months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).

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Average rainfall in March
Greenwich, CT

Average rainfall in March - Greenwich, CT
  • Average rainfall in March: 2.83"

The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").

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Average rainfall days in March
Greenwich, CT

Average rainfall days in March - Greenwich, CT
  • Average rainfall days in March: 12.8 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in March
Greenwich, CT

Average snowfall in March - Greenwich, CT
  • Average snowfall in March: 2.36"

The month with the highest snowfall is February (2.52").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in March
Greenwich, CT

Average snowfall days in March - Greenwich, CT
  • Average snowfall days in March: 5 days

The month with the highest number of snowfall days is January (7.2 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in March
Greenwich, CT

Average sea temperature in March - Greenwich, CT
  • Average sea temperature in March: 39.7°F

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).

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Average daylight in March /
Average sunshine in March
Greenwich, CT

Average daylight in March / Average sunshine in March - Greenwich, CT
  • Average daylight in March: 12h

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

  • Average sunshine in March: 6.2h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in March
Greenwich, CT

Average sunshine days in March - Greenwich, CT
  • Average sunshine days in March: 14 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in March
Greenwich, CT

Average UV index in March - Greenwich, CT
  • Average UV index in March: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in March
Greenwich, CT

Average cloud cover in March - Greenwich, CT
  • Average cloud cover in March: 48

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in March
Greenwich, CT

Average visibility in March - Greenwich, CT
  • Average visibility in March: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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