This report describes the typical weather at the Tucson International Airport (Tucson, Arizona, United States) weather station over the course of an average November. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Tucson, Arizona has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by shrublands (70%), grasslands (23%), forests (4%), and built-up areas (3%).
The month of November is characterized by rapidly falling daily high temperatures, with daily highs decreasing from 79Â°F to 68Â°F over the course of the month, exceeding 87Â°F or dropping below 58Â°F only one day in ten.
Over the course of November, the length of the day is gradually decreasing. The shortest day of the month is November 29 with 10:13 hours of daylight; the longest day is November 1 with 10:53 hours of daylight.
The earliest sunrise is at 6:41am on November 1; the latest sunset is at 5:34pm on November 1; the latest sunrise is at 7:06am on November 30; the earliest sunset is at 5:19pm on November 29.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover is 1% (clear) and does not vary substantially over the course of the month.
On November 15, a representative day, the sky is clear or mostly clear 74% of the time, partly cloudy 9% of the time, and mostly cloudy or overcast 17% of the time.
The average probability that some form of precipitation will be observed in a given day is 14%, with little variation over the course of the month.
Throughout November, the most common forms of precipitation are light rain, moderate rain, and thunderstorms.
Light rain is the most severe precipitation observed during 41% of those days with precipitation. It is most likely around November 30, when it is observed during 6% of all days.
Moderate rain is the most severe precipitation observed during 29% of those days with precipitation. It is most likely around November 30, when it is observed during 5% of all days.
Thunderstorms are the most severe precipitation observed during 20% of those days with precipitation. They are most likely around November 1, when it is observed during 4% of all days.
Either snow is exceptionally unlikely to fall at this location in November or this station does not reliably report precipitation types.
The relative humidity typically ranges from 20% (dry) to 66% (mildly humid) over the course of a typical November, rarely dropping below 10% (very dry) and reaching as high as 97% (very humid).
The air is driest around November 1, at which time the relative humidity drops below 25% (dry) three days out of four; it is most humid around November 30, rising above 48% (comfortable) 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 November, the dew point typically varies from 22Â°F (dry) to 40Â°F (dry) and is rarely below 8Â°F (dry) or above 53Â°F (very comfortable).
Over the course of November typical wind speeds vary from 0 mph to 13 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around November 3, 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 November 27, at which time the average daily maximum wind speed is 13 mph (moderate breeze).