This report describes the typical weather at the Orlando Sanford International Airport (Sanford, Florida, United States) weather station over the course of an average May. It is based on the historical records from 1983 to 2012. Earlier records are either unavailable or unreliable.
Sanford, Florida has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by croplands (56%), forests (28%), grasslands (6%), lakes and rivers (5%), and built-up areas (5%).
The month of May is characterized by gradually rising daily high temperatures, with daily highs increasing from 84Â°F to 88Â°F over the course of the month, exceeding 94Â°F or dropping below 77Â°F only one day in ten.
Over the course of May, the length of the day is gradually increasing. The shortest day of the month is May 1 with 13:17 hours of daylight; the longest day is May 31 with 13:52 hours of daylight.
The earliest sunrise is at 6:27am on May 31; the latest sunset is at 8:19pm on May 31; the latest sunrise is at 6:44am on May 1; the earliest sunset is at 8:01pm on May 2.
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 is 24% (mostly clear) and does not vary substantially over the course of the month.
On May 16, a representative day, the sky is clear or mostly clear 42% of the time, partly cloudy 16% of the time, and mostly cloudy or overcast 21% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around May 31, occurring in 30% of days. Precipitation is least likely around May 1, occurring in 17% of days.
Throughout May, the most common forms of precipitation are thunderstorms, light rain, heavy rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 54% of those days with precipitation. They are most likely around May 31, when it is observed during 18% of all days.
Light rain is the most severe precipitation observed during 24% of those days with precipitation. It is most likely around May 9, when it is observed during 6% of all days.
Heavy rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around May 30, when it is observed during 3% of all days.
Moderate rain is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around May 31, when it is observed during 3% of all days.
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 42% (comfortable) to 94% (very humid) over the course of a typical May, rarely dropping below 30% (dry) and reaching as high as 100% (very humid).
The air is driest around May 1, at which time the relative humidity drops below 48% (comfortable) three days out of four; it is most humid around May 23, rising above 89% (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 56Â°F (comfortable) to 70Â°F (muggy) and is rarely below 46Â°F (dry) or above 74Â°F (very muggy).
Over the course of May typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 20 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around May 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around May 31, at which time the average daily maximum wind speed is 16 mph (moderate breeze).