March weather forecast
Stony Brook, NY

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Weather in March

The first month of the spring, March, is a chilly month in Stony Brook, New York, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 43.9°F (6.6°C).

Temperature

Stony Brook experiences an average high-temperature of a chilly 43.9°F (6.6°C) with the onset of March, subtly varied from February's 38.8°F (3.8°C). March witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 36°F (2.2°C).

Humidity

In Stony Brook, New York, the average relative humidity in March is 72%.

Rainfall

In Stony Brook, in March, it is raining for 10.5 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, there are 146.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.

Snowfall

January through March, October through December are months with snowfall. The month with the most snowfall in Stony Brook, New York, is March, when snow falls for 2.3 days and typically aggregates up to 2.13" (54mm) of snow.

Ocean temperature

In March, the average ocean temperature in Stony Brook is 40.5°F (4.7°C).
Note: In the course of swimming, this situation is life-threatening and fraught with risk. The severe cold of the water leads to immediate hyperventilation. Wearing a specialized swimsuit is critical to limit thermal injury.

Daylight

In Stony Brook, New York, the average length of the day in March is 11h and 58min.
On the first day of March in Stony Brook, sunrise is at 6:25 am and sunset at 5:44 pm EST. On the last day of the month, sunrise is at 6:36 am and sunset at 7:16 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

The average sunshine in March in Stony Brook is 6.3h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Stony Brook. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 2 in March suggests the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Stony Brook in March?

The average high-temperature, in March, in Stony Brook, is 43.9°F (6.6°C), while the average low-temperature is 36°F (2.2°C).

What is the average humidity in March in Stony Brook?

In Stony Brook, New York, the average relative humidity in March is 72%.

How many days does it rain in March in Stony Brook?

In Stony Brook, in March, during 10.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

What is the snowiest month in Stony Brook?

March is the month with the most snowfall in Stony Brook. Snow falls for 2.3 days and accumulates 2.13" (54mm) of snow.

What is the last month it snows in Stony Brook?

March is the last month it regularly snows in Stony Brook. During 2.3 snowfall days, in March, Stony Brook aggregates 2.13" (54mm) of snow.

What is the ocean temperature in March in Stony Brook?

In Stony Brook, New York, in March, the average water temperature is 40.5°F (4.7°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 Stony Brook?

The average day length in March in Stony Brook, New York, is 11h and 58min.

When is the sunrise / sunset in March in Stony Brook?

In March, on the first day of the month, sunrise is at 6:25 am and sunset at 5:44 pm EST. On the last day of the month, in Stony Brook, New York, sunrise is at 6:36 am and sunset at 7:16 pm EDT.

When does Daylight Saving Time (DST) start in March in Stony Brook?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Stony Brook, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How many hours of sunshine does Stony Brook have in March?

In Stony Brook, New York, the average sunshine duration in March is 6.3h.

What is the month with the lowest UV index in Stony Brook?

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

What is the UV index reading in March in Stony Brook?

In March, the average daily maximum UV index in Stony Brook, New York, is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Stony Brook, NY

Average temperature in March - Stony Brook, NY
  • Average high temperature in March: 43.9°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in March: 36°F

The months with the highest average low temperature are July and August (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

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Average pressure in March
Stony Brook, NY

Average pressure in March - Stony Brook, NY
  • Average pressure in March: 30.05"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in March
Stony Brook, NY

Average wind speed in March - Stony Brook, NY
  • Average wind speed in March: 12.2mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in March
Stony Brook, NY

Average humidity in March - Stony Brook, NY
  • Average humidity in March: 72%

The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in March
Stony Brook, NY

Average rainfall in March - Stony Brook, NY
  • Average rainfall in March: 2.6"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in March
Stony Brook, NY

Average rainfall days in March - Stony Brook, NY
  • Average rainfall days in March: 10.5 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in March
Stony Brook, NY

Average snowfall in March - Stony Brook, NY
  • Average snowfall in March: 2.13"

The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in March
Stony Brook, NY

Average snowfall days in March - Stony Brook, NY
  • Average snowfall days in March: 2.3 days

The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in March
Stony Brook, NY

Average sea temperature in March - Stony Brook, NY
  • Average sea temperature in March: 40.4°F

The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

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Average daylight in March /
Average sunshine in March
Stony Brook, NY

Average daylight in March / Average sunshine in March - Stony Brook, NY
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in March: 6h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in March
Stony Brook, NY

Average sunshine days in March - Stony Brook, NY
  • Average sunshine days in March: 17.3 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (13 days).

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Average UV index in March
Stony Brook, NY

Average UV index in March - Stony Brook, NY
  • Average UV index in March: 2

The months with the highest UV index are June, July and August (UV index 6).
The 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
Stony Brook, NY

Average cloud cover in March - Stony Brook, NY
  • Average cloud cover in March: 47

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in March
Stony Brook, NY

Average visibility in March - Stony Brook, NY
  • Average visibility in March: 6mi

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

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Stony Brook, New York, USA

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