This report describes the typical weather at the Riga International Airport (Riga, Latvia) weather station over the course of an average March. It is based on the historical records from 1995 to 2012. Earlier records are either unavailable or unreliable.
Riga has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (43%), oceans and seas (26%), forests (15%), grasslands (10%), and built-up areas (3%).
The month of March is characterized by rapidly rising daily high temperatures, with daily highs increasing from 35Â°F to 46Â°F over the course of the month, exceeding 56Â°F or dropping below 25Â°F only one day in ten.
Over the course of March, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 2:25 hours, implying an average day-over-day increase of 4.7 minutes.
The shortest day of the month is March 1 with 10:41 hours of daylight; the longest day is March 31 with 13:06 hours of daylight.
The earliest sunrise is at 6:15am on March 24; the latest sunset is at 8:02pm on March 31; the latest sunrise is at 7:16am on March 1; the earliest sunset is at 5:57pm on March 1.
Daylight savings time (DST) starts at 4:00am on March 25, 2012, shifting sunrise and sunset to an hour later.
The median cloud cover is 97% (overcast) and does not vary substantially over the course of the month.
On March 16, a representative day, the sky is clear or mostly clear 4% of the time, partly cloudy 6% of the time, and mostly cloudy or overcast 58% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around March 1, occurring in 70% of days. Precipitation is least likely around March 31, occurring in 52% of days.
Throughout March, the most common forms of precipitation are moderate snow, light snow, and light rain.
Moderate snow is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around March 1, when it is observed during 27% of all days.
Light snow is the most severe precipitation observed during 30% of those days with precipitation. It is most likely around March 1, when it is observed during 24% of all days.
Light rain is the most severe precipitation observed during 26% of those days with precipitation. It is most likely around March 30, when it is observed during 20% of all days.
The likelihood of snow falling is highest around March 1, occurring in 54% of days.
Either snow rarely accumulates at this location in March or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 54% (mildly humid) to 95% (very humid) over the course of a typical March, rarely dropping below 34% (comfortable) and reaching as high as 100% (very humid).
The air is driest around March 30, at which time the relative humidity drops below 65% (mildly humid) three days out of four; it is most humid around March 1, rising above 93% (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 March, the dew point typically varies from 20Â°F (dry) to 35Â°F (dry) and is rarely below 7Â°F (dry) or above 43Â°F (dry).
Over the course of March typical wind speeds vary from 1 mph to 13 mph (light air to moderate breeze), rarely exceeding 20 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around March 1, at which time the average daily maximum wind speed is 13 mph (moderate breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around March 25, at which time the average daily maximum wind speed is 13 mph (moderate breeze).