Winthrop
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Winthrop, MA

March, the first month of the spring, in Winthrop, is a chilly month, with average temperature ranging between max 43.5°F (6.4°C) and min 30.9°F (-0.6°C).

Temperature

In Winthrop, the average high-temperature marginally rises, from a wintry 36.5°F (2.5°C) in February, to a frosty 43.5°F (6.4°C). The average low-temperature, in Winthrop, Massachusetts, is 30.9°F (-0.6°C).

Humidity

The average relative humidity in Winthrop is 73%.

Rainfall

Months with the most rainfall are March, April and December, with an average 2.91" (74mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Winthrop. In March, it is snowing for 6.8 days. Throughout March, 3.86" (98mm) of snow is accumulated. Throughout the year, there are 29.8 snowfall days, and 15.75" (400mm) of snow is accumulated.

Ocean temperature

February and March, with an average ocean temperature of 38.8°F (3.8°C), are months with the coldest seawater.
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

In Winthrop, the average length of the day is 12h.

Sunshine

The average sunshine in Winthrop is 5.6h.

UV index

Months with the lowest UV index 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 vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In March, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Winthrop?

In Winthrop, Massachusetts, in March, the average high-temperature is 43.5°F (6.4°C), and the average low-temperature is 30.9°F (-0.6°C).

What is the average humidity in March in Winthrop?

In March, the average relative humidity is 73%.

How many days does it rain in March in Winthrop?

In Winthrop, in March, during 11.6 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

What is the wettest month in Winthrop?

The wettest months are March, April and December, with an average 2.91" (74mm) of rainfall.

How many days does it snow in March in Winthrop?

In March, in Winthrop, Massachusetts, it is snowing for 6.8 days. Throughout March, 3.86" (98mm) of snow is accumulated.

What months are the ocean coldest in Winthrop?

Months with the coldest seawater are February and March, with an average ocean temperature of 38.8°F (3.8°C).

What is the ocean temperature in March in Winthrop?

In Winthrop, Massachusetts, in March, the average water temperature is 38.8°F (3.8°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

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

In March, the average length of the day is 12h.

How long on average sun shines in March in Winthrop?

In March, the average sunshine in Winthrop is 5.6h.

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

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

What is the UV index intensity in March in Winthrop?

In March, the average daily maximum UV index in Winthrop, Massachusetts, is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the UV radiation.
Average temperature in March - Winthrop, MA
  • Average high temperature in March: 43.5°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in March: 30.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average humidity in March - Winthrop, MA
  • Average humidity in March: 73%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).

Average rainfall in March - Winthrop, MA
  • Average rainfall in March: 2.91"

The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").

Average rainfall days in March - Winthrop, MA
  • Average rainfall days in March: 11.6 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in March - Winthrop, MA
  • Average snowfall in March: 3.86"

The month with the highest snowfall is February (4.72").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in March - Winthrop, MA
  • Average snowfall days in March: 6.8 days

Months with the highest number of snowfall days are January and February (7.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in March - Winthrop, MA
  • Average sea temperature in March: 38.8°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

Average daylight in March / Average sunshine in March - Winthrop, MA
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in March: 5.6h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index in March - Winthrop, MA
  • 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).