This report describes the typical weather at the St. Augustine Airport (St. Augustine, Florida, United States) weather station over the course of an average February. It is based on the historical records from 1997 to 2012. Earlier records are either unavailable or unreliable.
St. Augustine, 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 (46%), forests (39%), croplands (9%), and lakes and rivers (5%).
The month of February is characterized by rising daily high temperatures, with daily highs ranging from 64°F to 69°F over the course of the month, exceeding 79°F or dropping below 54°F only one day in ten.
Over the course of February, the length of the day is gradually increasing. The shortest day of the month is February 1 with 10:47 hours of daylight; the longest day is February 29 with 11:32 hours of daylight.
The earliest sunrise is at 6:52am on February 29; the latest sunset is at 6:24pm on February 28; the latest sunrise is at 7:16am on February 2; the earliest sunset is at 6:02pm on February 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in February, so the entire month is in standard time.
The median cloud cover is 17% (mostly clear) and does not vary substantially over the course of the month.
On February 15, a representative day, the sky is clear or mostly clear 58% of the time, partly cloudy 5% of the time, and mostly cloudy or overcast 31% of the time.
The average probability that some form of precipitation will be observed in a given day is 13%, with little variation over the course of the month.
Throughout February, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 37% of those days with precipitation. They are most likely around February 29, when it is observed during 6% of all days.
Light rain is the most severe precipitation observed during 37% of those days with precipitation. It is most likely around February 15, when it is observed during 5% of all days.
Moderate rain is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around February 3, when it is observed during 3% of all days.
Either snow is exceptionally unlikely to fall at this location in February or this station does not reliably report precipitation types.
The relative humidity typically ranges from 50% (comfortable) to 90% (very humid) over the course of a typical February, rarely dropping below 30% (dry) and reaching as high as 100% (very humid).
The air is driest around February 27, at which time the relative humidity drops below 62% (mildly humid) three days out of four; it is most humid around February 1, rising above 86% (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 February, the dew point typically varies from 39°F (dry) to 56°F (comfortable) and is rarely below 25°F (dry) or above 66°F (muggy).
The time of the month between February 1 and February 29 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of February typical wind speeds vary from 0 mph to 15 mph (calm to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around February 27, 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 February 7, at which time the average daily maximum wind speed is 14 mph (moderate breeze).