This report describes the typical weather at the Monterey Peninsula Airport (Monterey, California, United States) weather station over the course of an average March. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Monterey, California has a mediterranean climate with dry warm summers and mild winters. The area within 25 mi of this station is covered by oceans and seas (48%), grasslands (31%), forests (17%), and croplands (3%).
The month of March is characterized by essentially constant daily high temperatures, with daily highs around 60°F throughout the month, exceeding 68°F or dropping below 54°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 1:10 hours, implying an average day-over-day increase of 2.3 minutes.
The shortest day of the month is March 1 with 11:25 hours of daylight; the longest day is March 31 with 12:36 hours of daylight.
The earliest sunrise is at 6:25am on March 10; the latest sunset is at 7:30pm on March 31; the latest sunrise is at 7:23am on March 11; the earliest sunset is at 6:03pm on March 1.
Daylight savings time (DST) starts at 3:00am on March 11, 2012, shifting sunrise and sunset to an hour later.
The median cloud cover ranges from 57% (partly cloudy) to 64% (partly cloudy).
On March 16, a representative day, the sky is clear or mostly clear 38% of the time, partly cloudy 7% of the time, and mostly cloudy or overcast 44% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around March 4, occurring in 37% of days. Precipitation is least likely around March 31, occurring in 30% of days.
Throughout March, the most common forms of precipitation are light rain, moderate rain, and heavy rain.
Light rain is the most severe precipitation observed during 47% of those days with precipitation. It is most likely around March 1, when it is observed during 17% of all days.
Moderate rain is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around March 4, when it is observed during 14% of all days.
Heavy rain is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around March 7, when it is observed during 4% 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 54% (mildly humid) to 90% (very humid) over the course of a typical March, rarely dropping below 37% (comfortable) and reaching as high as 100% (very humid).
The air is driest around March 31, at which time the relative humidity drops below 63% (mildly humid) three days out of four; it is most humid around March 1, rising above 85% (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 40°F (dry) to 49°F (dry) and is rarely below 31°F (dry) or above 54°F (very comfortable).
Over the course of March typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 20 mph (fresh breeze).
The highest average wind speed of 7 mph (light breeze) occurs around March 31, at which time the average daily maximum wind speed is 14 mph (moderate breeze).
The lowest average wind speed of 6 mph (light breeze) occurs around March 1, at which time the average daily maximum wind speed is 12 mph (gentle breeze).