This report describes the typical weather at the Scottsdale Municipal Airport (Scottsdale, Arizona, United States) weather station over the course of an average March. It is based on the historical records from 1988 to 2012. Earlier records are either unavailable or unreliable.
Scottsdale, Arizona has a hot desert climate. The area within 25 mi of this station is covered by shrublands (82%), grasslands (10%), built-up areas (3%), and forests (2%).
The month of March is characterized by rising daily high temperatures, with daily highs increasing from 71°F to 78°F over the course of the month, exceeding 87°F or dropping below 60°F only one day in ten.
Over the course of March, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:03 hours, implying an average day-over-day increase of 2.0 minutes.
The shortest day of the month is March 1 with 11:29 hours of daylight; the longest day is March 31 with 12:32 hours of daylight.
The earliest sunrise is at 6:16am on March 31; the latest sunset is at 6:48pm on March 31; the latest sunrise is at 6:55am on March 1; the earliest sunset is at 6:24pm on March 1.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover ranges from 2% (clear) to 8% (clear). The trend is for the sky to be clearing with the median cloud cover decreasing by 6% from the start to the end of the month.
On March 16, a representative day, the sky is clear or mostly clear 55% of the time, partly cloudy 8% of the time, and mostly cloudy or overcast 18% of the time.
The average probability that some form of precipitation will be observed in a given day is 11%, with little variation over the course of the month.
Throughout March, the most common forms of precipitation are light rain, thunderstorms, and moderate rain.
Light rain is the most severe precipitation observed during 39% of those days with precipitation. It is most likely around March 2, when it is observed during 5% of all days.
Thunderstorms are the most severe precipitation observed during 27% of those days with precipitation. They are most likely around March 8, when it is observed during 3% of all days.
Moderate rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around March 5, when it is observed during 3% of all days.
Either snow is exceptionally unlikely to fall at this location in March or this station does not reliably report precipitation types.
The relative humidity typically ranges from 19% (dry) to 82% (humid) over the course of a typical March, rarely dropping below 8% (very dry) and reaching as high as 100% (very humid).
The air is driest around March 30, at which time the relative humidity drops below 21% (dry) three days out of four; it is most humid around March 1, rising above 64% (mildly 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 24°F (dry) to 37°F (dry) and is rarely below 11°F (dry) or above 49°F (dry).
Over the course of March typical wind speeds vary from 0 mph to 11 mph (calm to gentle breeze), rarely exceeding 17 mph (moderate breeze).
The highest average wind speed of 5 mph (light breeze) occurs around March 31, at which time the average daily maximum wind speed is 11 mph (gentle breeze).
The lowest average wind speed of 4 mph (light breeze) occurs around March 1, at which time the average daily maximum wind speed is 10 mph (gentle breeze).