This report describes the typical weather at the General Mariano Escobedo International Airport (Monterrey, Mexico) weather station over the course of an average year. It is based on the historical records from 1990 to 2012. Earlier records are either unavailable or unreliable.
Monterrey has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by grasslands (62%), shrublands (16%), forests (14%), and croplands (6%).
Over the course of a year, the temperature typically varies from 48Â°F to 96Â°F and is rarely below 38Â°F or above 101Â°F.
The warm season lasts from May 6 to September 9 with an average daily high temperature above 91Â°F. The hottest day of the year is August 1, with an average high of 96Â°F and low of 74Â°F.
The cold season lasts from November 24 to February 13 with an average daily high temperature below 74Â°F. The coldest day of the year is January 1, with an average low of 48Â°F and high of 69Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 10:32 hours of daylight; the longest day is June 20 with 13:44 hours of daylight.
The earliest sunrise is at 6:32am on March 31 and the latest sunset is at 8:36pm on June 30. The latest sunrise is at 7:46am on October 27 and the earliest sunset is at 5:49pm on November 30.
Daylight saving time (DST) is observed in this location during 2012, starting in the spring on April 1 and ending in the fall on October 28.
The median cloud cover ranges from 55% (partly cloudy) to 74% (partly cloudy). The sky is cloudiest on April 23 and clearest on December 22. The clearer part of the year begins around July 12. The cloudier part of the year begins around February 23.
On December 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 38% of the time, and overcast or mostly cloudy 33% of the time.
On April 23, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 49% of the time, and clear or mostly clear 21% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around September 30, occurring in 32% of days. Precipitation is least likely around March 21, occurring in 19% of days.
Over the entire year, the most common forms of precipitation are drizzle, light rain, moderate rain, and thunderstorms.
Drizzle is the most severe precipitation observed during 35% of those days with precipitation. It is most likely around December 30, when it is observed during 15% of all days.
Light rain is the most severe precipitation observed during 23% of those days with precipitation. It is most likely around September 28, when it is observed during 9% of all days.
Moderate rain is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around September 20, when it is observed during 11% of all days.
Thunderstorms are the most severe precipitation observed during 17% of those days with precipitation. They are most likely around June 7, when it is observed during 9% of all days.
During the warm season, which lasts from May 6 to September 9, there is a 24% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of thunderstorms (33% of days with precipitation have at worst thunderstorms), light rain (24%), moderate rain (23%), and drizzle (14%).
During the cold season, which lasts from November 24 to February 13, there is a 22% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of drizzle (66% of days with precipitation have at worst drizzle), light rain (19%), and moderate rain (13%).
Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.
The relative humidity typically ranges from 37% (comfortable) to 93% (very humid) over the course of the year, rarely dropping below 18% (dry) and reaching as high as 100% (very humid).
The air is driest around April 16, at which time the relative humidity drops below 47% (comfortable) three days out of four; it is most humid around September 14, exceeding 90% (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 year, the dew point typically varies from 38Â°F (dry) to 73Â°F (very muggy) and is rarely below 25Â°F (dry) or above 76Â°F (oppressive).
There are two periods in the year that are most comfortable: The first is between January 1 and April 18 and the second is between October 23 and December 31. The air feels neither too dry nor too muggy during these periods.
Over the course of the year typical wind speeds vary from 0 mph to 21 mph (calm to fresh breeze), rarely exceeding 30 mph (strong breeze).
The highest average wind speed of 11 mph (gentle breeze) occurs around June 18, at which time the average daily maximum wind speed is 20 mph (fresh breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around November 8, at which time the average daily maximum wind speed is 13 mph (moderate breeze).