This report describes the typical weather at the New York City (New York, United States) weather station over the course of an average October. 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 October is characterized by rapidly falling daily high temperatures, with daily highs decreasing from 67°F to 58°F over the course of the month, exceeding 76°F or dropping below 49°F only one day in ten.
Over the course of October, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 1:17 hours, implying an average day-over-day decrease of 2.5 minutes.
The shortest day of the month is October 31 with 10:27 hours of daylight; the longest day is October 1 with 11:44 hours of daylight.
The earliest sunrise is at 6:52am on October 1; the latest sunset is at 6:37pm on October 1; the latest sunrise is at 7:26am on October 31; the earliest sunset is at 5:53pm on October 31.
Daylight savings time is observed in 2012 but it neither starts nor ends in October, so the entire month is in daylight time.
The median cloud cover is 70% (partly cloudy) and does not vary substantially over the course of the month.
On October 16, a representative day, the sky is clear or mostly clear 32% of the time, partly cloudy 13% of the time, and mostly cloudy or overcast 46% of the time.
The average probability that some form of precipitation will be observed in a given day is 39%, with little variation over the course of the month.
Throughout October, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 53% of those days with precipitation. It is most likely around October 19, when it is observed during 21% of all days.
Moderate rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around October 14, when it is observed during 11% of all days.
Either snow is exceptionally unlikely to fall at this location in October or this station does not reliably report precipitation types.
The relative humidity typically ranges from 52% (mildly humid) to 90% (very humid) over the course of a typical October, rarely dropping below 33% (comfortable) and reaching as high as 100% (very humid).
The air is driest around October 31, at which time the relative humidity drops below 62% (mildly humid) three days out of four; it is most humid around October 2, rising above 84% (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 October, the dew point typically varies from 33°F (dry) to 57°F (comfortable) and is rarely below 21°F (dry) or above 67°F (muggy).
Over the course of October typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around October 31, at which time the average daily maximum wind speed is 14 mph (moderate breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around October 4, at which time the average daily maximum wind speed is 13 mph (moderate breeze).