This report describes the typical weather at the New York City (New York, United States) weather station over the course of an average March. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
New York, New York has a humid continental climate with hot summers and no dry season. The area within 25 mi of this station is covered by built-up areas (48%), oceans and seas (22%), forests (16%), grasslands (7%), and lakes and rivers (5%).
The month of March is characterized by rising daily high temperatures, with daily highs increasing from 44°F to 53°F over the course of the month, exceeding 64°F or dropping below 33°F only one day in ten.
Over the course of March, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:22 hours, implying an average day-over-day increase of 2.6 minutes.
The shortest day of the month is March 1 with 11:18 hours of daylight; the longest day is March 31 with 12:40 hours of daylight.
The earliest sunrise is at 6:15am on March 10; the latest sunset is at 7:20pm on March 31; the latest sunrise is at 7:13am on March 11; the earliest sunset is at 5:48pm on March 1.
Daylight savings time (DST) starts at 3:00am on March 11, 2012, shifting sunrise and sunset to an hour later.
The median cloud cover ranges from 74% (partly cloudy) to 80% (mostly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 6% from the start to the end of the month.
On March 16, a representative day, the sky is clear or mostly clear 33% of the time, partly cloudy 10% of the time, and mostly cloudy or overcast 52% of the time.
The average probability that some form of precipitation will be observed in a given day is 48%, with little variation over the course of the month.
Throughout March, the most common forms of precipitation are light rain, moderate rain, and light snow.
Light rain is the most severe precipitation observed during 33% of those days with precipitation. It is most likely around March 31, when it is observed during 19% of all days.
Moderate rain is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around March 29, when it is observed during 12% of all days.
Light snow is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around March 1, when it is observed during 14% of all days.
The likelihood of snow falling is highest around March 1, occurring in 22% of days.
Accumulation at this location in March is unlikely. The chances of there being snow on the ground are highest around March 1, occurring 13% of the time.
The snow is typically at its deepest on March 31, with a median depth of 4.7"; the depth exceeds 5.0" only one year out of ten.
The relative humidity typically ranges from 44% (comfortable) to 84% (humid) over the course of a typical March, rarely dropping below 23% (dry) and reaching as high as 100% (very humid).
The air is driest around March 17, at which time the relative humidity drops below 56% (mildly humid) three days out of four; it is most humid around March 29, rising above 75% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical March, the dew point typically varies from 16°F (dry) to 39°F (dry) and is rarely below 1°F (dry) or above 52°F (very comfortable).
Over the course of March typical wind speeds vary from 0 mph to 17 mph (calm to moderate breeze), rarely exceeding 25 mph (strong breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around March 3, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around March 24, at which time the average daily maximum wind speed is 17 mph (moderate breeze).