This report describes the typical weather at the Phoenix-Mesa Gateway Airport (Mesa, Arizona, United States) weather station over the course of an average February. It is based on the historical records from 1999 to 2012. Earlier records are either unavailable or unreliable.
Mesa, Arizona has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by shrublands (80%), grasslands (10%), forests (6%), and croplands (2%).
The month of February is characterized by gradually rising daily high temperatures, with daily highs increasing from 68°F to 72°F over the course of the month, exceeding 82°F or dropping below 60°F only one day in ten.
Over the course of February, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 53 minutes, implying an average day-over-day increase of 1.8 minutes.
The shortest day of the month is February 1 with 10:36 hours of daylight; the longest day is February 29 with 11:28 hours of daylight.
The earliest sunrise is at 6:55am on February 29; the latest sunset is at 6:24pm on February 29; the latest sunrise is at 7:23am on February 2; the earliest sunset is at 5:58pm on February 1.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover is 36% (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 46% of the time, partly cloudy 14% of the time, and mostly cloudy or overcast 30% of the time.
The average probability that some form of precipitation will be observed in a given day is 15%, with little variation over the course of the month.
Throughout February, the most common forms of precipitation are moderate rain, light rain, and thunderstorms.
Moderate rain is the most severe precipitation observed during 46% of those days with precipitation. It is most likely around February 20, when it is observed during 7% of all days.
Light rain is the most severe precipitation observed during 25% of those days with precipitation. It is most likely around February 19, when it is observed during 4% of all days.
Thunderstorms are the most severe precipitation observed during 21% of those days with precipitation. They are most likely around February 17, when it is observed during 4% 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 24% (dry) to 71% (humid) over the course of a typical February, rarely dropping below 10% (very dry) and reaching as high as 96% (very humid).
The air is driest around February 29, at which time the relative humidity drops below 31% (comfortable) three days out of four; it is most humid around February 1, rising above 52% (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 February, the dew point typically varies from 24°F (dry) to 40°F (dry) and is rarely below 9°F (dry) or above 52°F (very comfortable).
Over the course of February typical wind speeds vary from 0 mph to 11 mph (calm to gentle breeze), rarely exceeding 19 mph (fresh breeze).
The highest average wind speed of 6 mph (light breeze) occurs around February 29, at which time the average daily maximum wind speed is 11 mph (gentle breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around February 7, at which time the average daily maximum wind speed is 10 mph (gentle breeze).