This report describes the typical weather at the Wallops Flight Facility (Wallops Island, Virginia, United States) weather station over the course of an average November. It is based on the historical records from 1996 to 2012. Earlier records are either unavailable or unreliable.
Wallops Island, Virginia has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by oceans and seas (55%), croplands (23%), and forests (22%).
The month of November is characterized by falling daily high temperatures, with daily highs decreasing from 62°F to 54°F over the course of the month, exceeding 71°F or dropping below 43°F only one day in ten.
Over the course of November, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 50 minutes, implying an average day-over-day decrease of 1.7 minutes.
The shortest day of the month is November 30 with 9:45 hours of daylight; the longest day is November 1 with 10:35 hours of daylight.
The earliest sunrise is at 6:31am on November 4; the latest sunset is at 6:03pm on November 1; the latest sunrise is at 7:30am on November 3; the earliest sunset is at 4:43pm on November 29.
Daylight savings time (DST) ends at 1:00am on November 4, 2012, shifting sunrise and sunset to an hour earlier.
The median cloud cover ranges from 38% (mostly clear) to 45% (partly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 5% from the start to the end of the month.
On November 15, a representative day, the sky is clear or mostly clear 47% of the time, partly cloudy 4% of the time, and mostly cloudy or overcast 36% of the time.
The average probability that some form of precipitation will be observed in a given day is 38%, with little variation over the course of the month.
Throughout November, the most common forms of precipitation are light rain, moderate rain, and heavy rain.
Light rain is the most severe precipitation observed during 40% of those days with precipitation. It is most likely around November 1, when it is observed during 17% of all days.
Moderate rain is the most severe precipitation observed during 31% of those days with precipitation. It is most likely around November 30, when it is observed during 13% of all days.
Heavy rain is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around November 16, when it is observed during 9% of all days.
The likelihood of snow falling is highest around November 30, occurring in 5% of days.
Either snow rarely accumulates at this location in November or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 52% (mildly humid) to 91% (very humid) over the course of a typical November, rarely dropping below 34% (comfortable) and reaching as high as 100% (very humid).
The air is driest around November 28, at which time the relative humidity drops below 63% (mildly humid) three days out of four; it is most humid around November 12, rising above 87% (very 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 November, the dew point typically varies from 30°F (dry) to 51°F (very comfortable) and is rarely below 15°F (dry) or above 63°F (mildy humid).
Over the course of November typical wind speeds vary from 1 mph to 15 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around November 3, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around November 11, at which time the average daily maximum wind speed is 14 mph (moderate breeze).