This report describes the typical weather at the Williamsbrug-Jamestown Airport (Williamsburg, Virginia, United States) weather station over the course of an average May. It is based on the historical records from 2003 to 2012. Earlier records are either unavailable or unreliable.
Williamsburg, 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 forests (70%), oceans and seas (14%), croplands (7%), lakes and rivers (6%), and built-up areas (3%).
The month of May is characterized by rising daily high temperatures, with daily highs increasing from 77°F to 85°F over the course of the month, exceeding 92°F or dropping below 67°F only one day in ten.
Over the course of May, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 47 minutes, implying an average day-over-day increase of 1.5 minutes.
The shortest day of the month is May 1 with 13:45 hours of daylight; the longest day is May 31 with 14:33 hours of daylight.
The earliest sunrise is at 5:49am on May 30; the latest sunset is at 8:21pm on May 31; the latest sunrise is at 6:12am on May 1; the earliest sunset is at 7:57pm on May 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in May, so the entire month is in daylight time.
The median cloud cover ranges from 27% (mostly clear) to 33% (mostly clear).
On May 16, a representative day, the sky is clear or mostly clear 45% of the time, partly cloudy 12% of the time, and mostly cloudy or overcast 29% of the time.
There is either very little precipitation at this location in May, or the weather station does not reliably report the conditions.
Either snow is exceptionally unlikely to fall at this location in May or this station does not reliably report precipitation types.
The relative humidity typically ranges from 43% (comfortable) to 95% (very humid) over the course of a typical May, rarely dropping below 27% (dry) and reaching as high as 100% (very humid).
The air is driest around May 3, at which time the relative humidity drops below 52% (mildly humid) three days out of four; it is most humid around May 30, rising above 93% (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 May, the dew point typically varies from 48°F (dry) to 68°F (muggy) and is rarely below 36°F (dry) or above 74°F (very muggy).
The time of the month between May 1 and May 24 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of May typical wind speeds vary from 0 mph to 12 mph (calm to gentle breeze), rarely exceeding 17 mph (moderate breeze).
The highest average wind speed of 6 mph (light breeze) occurs around May 1, at which time the average daily maximum wind speed is 12 mph (gentle breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around May 31, at which time the average daily maximum wind speed is 10 mph (gentle breeze).