This report describes the typical weather at the Charlottesville-Albemarle Airport (Charlottesville, Virginia, United States) weather station over the course of an average July. 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 July is characterized by essentially constant daily high temperatures, with daily highs around 86Â°F throughout the month, exceeding 94Â°F or dropping below 78Â°F only one day in ten.
Over the course of July, the length of the day is gradually decreasing. The shortest day of the month is July 31 with 14:08 hours of daylight; the longest day is July 1 with 14:46 hours of daylight.
The earliest sunrise is at 5:55am on July 1; the latest sunset is at 8:41pm on July 2; the latest sunrise is at 6:16am on July 30; the earliest sunset is at 8:24pm on July 31.
Daylight savings time is observed in 2012 but it neither starts nor ends in July, 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 July 16, a representative day, the sky is clear or mostly clear 38% of the time, partly cloudy 9% of the time, and mostly cloudy or overcast 39% of the time.
The average probability that some form of precipitation will be observed in a given day is 45%, with little variation over the course of the month.
Throughout July, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 52% of those days with precipitation. They are most likely around July 13, when it is observed during 24% of all days.
Light rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around July 4, when it is observed during 13% of all days.
Moderate rain is the most severe precipitation observed during 17% of those days with precipitation. It is most likely around July 26, when it is observed during 8% of all days.
Either snow is exceptionally unlikely to fall at this location in July or this station does not reliably report precipitation types.
The relative humidity typically ranges from 49% (comfortable) to 94% (very humid) over the course of a typical July, rarely dropping below 35% (comfortable) and reaching as high as 100% (very humid).
The air is driest around July 1, at which time the relative humidity drops below 56% (mildly humid) three days out of four; it is most humid around July 29, rising above 91% (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 July, the dew point typically varies from 59Â°F (comfortable) to 71Â°F (very muggy) and is rarely below 51Â°F (very comfortable) or above 76Â°F (very muggy).
Over the course of July typical wind speeds vary from 0 mph to 11 mph (calm to gentle breeze), rarely exceeding 16 mph (moderate breeze).
The highest average wind speed of 5 mph (light breeze) occurs around July 1, at which time the average daily maximum wind speed is 11 mph (gentle breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around July 31, at which time the average daily maximum wind speed is 11 mph (gentle breeze).