This report describes the typical weather at the St. Petersburg-Clearwater International Airport (St. Petersburg, Florida, United States) weather station over the course of an average June. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
St. Petersburg, 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 oceans and seas (52%), croplands (31%), and built-up areas (14%).
The month of June is characterized by essentially constant daily high temperatures, with daily highs around 89°F throughout the month, exceeding 94°F or dropping below 85°F only one day in ten.
Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 1 with 13:48 hours of daylight; the longest day is June 17 with 13:55 hours of daylight.
The earliest sunrise is at 6:34am on June 8; the latest sunset is at 8:31pm on June 24; the latest sunrise is at 6:38am on June 30; the earliest sunset is at 8:23pm on June 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in June, so the entire month is in daylight time.
The median cloud cover ranges from 38% (mostly clear) to 49% (partly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 11% from the start to the end of the month.
On June 1, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
On June 30, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 58% of the time, and clear or mostly clear 40% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around June 30, occurring in 63% of days. Precipitation is least likely around June 1, occurring in 40% of days.
Throughout June, the most common forms of precipitation are thunderstorms and light rain.
Thunderstorms are the most severe precipitation observed during 80% of those days with precipitation. They are most likely around June 30, when it is observed during 53% of all days.
Light rain is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around June 1, when it is observed during 6% of all days.
Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.
The relative humidity typically ranges from 52% (mildly humid) to 94% (very humid) over the course of a typical June, rarely dropping below 40% (comfortable) and reaching as high as 100% (very humid).
The air is driest around June 1, at which time the relative humidity drops below 58% (mildly humid) three days out of four; it is most humid around June 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 June, the dew point typically varies from 66°F (muggy) to 77°F (oppressive) and is rarely below 60°F (comfortable) or above 79°F (oppressive).
Over the course of June typical wind speeds vary from 0 mph to 15 mph (calm to moderate breeze), rarely exceeding 19 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around June 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 June 29, at which time the average daily maximum wind speed is 14 mph (moderate breeze).