This report describes the typical weather at the Charlottesville-Albemarle Airport (Charlottesville, Virginia, United States) weather station over the course of an average August. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Charlottesville, 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 (99%).
The month of August is characterized by gradually falling daily high temperatures, with daily highs around 84Â°F throughout the month, exceeding 93Â°F or dropping below 75Â°F only one day in ten.
Over the course of August, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 1:05 hours, implying an average day-over-day decrease of 2.1 minutes.
The shortest day of the month is August 31 with 13:01 hours of daylight; the longest day is August 1 with 14:06 hours of daylight.
The earliest sunrise is at 6:17am on August 1; the latest sunset is at 8:23pm on August 1; the latest sunrise is at 6:43am on August 31; the earliest sunset is at 7:44pm on August 31.
Daylight savings time is observed in 2012 but it neither starts nor ends in August, so the entire month is in daylight time.
The median cloud cover is 50% (partly cloudy) and does not vary substantially over the course of the month.
On August 16, a representative day, the sky is clear or mostly clear 38% of the time, partly cloudy 8% of the time, and mostly cloudy or overcast 38% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around August 1, occurring in 43% of days. Precipitation is least likely around August 31, occurring in 38% of days.
Throughout August, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 46% of those days with precipitation. They are most likely around August 1, when it is observed during 23% of all days.
Light rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around August 24, when it is observed during 12% of all days.
Moderate rain is the most severe precipitation observed during 21% of those days with precipitation. It is most likely around August 31, when it is observed during 9% of all days.
Either snow is exceptionally unlikely to fall at this location in August or this station does not reliably report precipitation types.
The relative humidity typically ranges from 51% (mildly humid) to 95% (very humid) over the course of a typical August, rarely dropping below 35% (comfortable) and reaching as high as 100% (very humid).
The air is driest around August 31, at which time the relative humidity drops below 60% (mildly humid) three days out of four; it is most humid around August 17, rising above 92% (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 August, the dew point typically varies from 59Â°F (comfortable) to 70Â°F (muggy) and is rarely below 49Â°F (dry) or above 75Â°F (very muggy).
Over the course of August typical wind speeds vary from 0 mph to 10 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).
The highest average wind speed of 5 mph (light breeze) occurs around August 1, at which time the average daily maximum wind speed is 10 mph (gentle breeze).
The lowest average wind speed of 4 mph (light breeze) occurs around August 16, at which time the average daily maximum wind speed is 10 mph (gentle breeze).