Climate
Albuquerque's climate is usually sunny and dry, with low relative humidity. Brilliant sunshine defines the region, averaging more than 300 days a year; periods of variably mid and high-level cloudiness temper the sun at other times. Extended cloudiness is rare. The city has four distinct seasons, but the heat and cold are mild compared to the extremes that occur more commonly in other parts of the country.
Winters are rather brief but definite; daytime highs range from the mid 40s to upper 50s Fahrenheit, while the overnight lows drop into the low 20s to near 30 by sunrise; nights are often colder in the valley and uppermost foothills by several degrees. The occasional snowfall, associated with low pressure areas, fronts and troughs, often melts by the mid-afternoon; over half of the scant winter moisture occurs in the form of light rain showers, usually brief in duration. In the much higher and colder Sandia Mountains, moisture falls as snow; many years have enough snow to create decent skiing conditions at the local ski area.
Springtime starts off windy and cool, sometimes unsettled with some rain and even light snow, though spring is usually the driest part of the year in Albuquerque. March and April tend to see many days with the wind blowing at 20 to 30 mph, and afternoon gusts can produce periods of blowing sand and dust. In May, the winds tend to subside, as temperatures start to feel like summer.
Summer daytime highs range from the upper 80s to the upper 90's, while dropping into the low 60s to low 70s overnight; the valley and uppermost foothills are often several degrees cooler than that. The heat is quite tolerable because of low humidity, except during the late summer during increased humidity from surges in the monsoonal pattern; at that time, daytime highs drop slightly but the extra moisture in the air can cause nighttime temperatures to increase.
Fall sees mild days and cool nights with less rain, though the weather can be more unsettled closer to winter.
Year round, the low temperatures tend to be approximately five degrees warmer than those of nearby cities and towns such as Rio Rancho, Corrales, Bernalillo, Los Lunas, and Belen.
The city was one of several in the region experiencing a severe winter storm leaving between 10 and 26 inches of snow in just over 24 hours on December 30, 2006.
Albuquerque's climate is classified as arid (BWk or BWh, depending on the particular scheme of the Köppen climate classification system one uses), meaning average annual precipitation is less than half of evaporation, and the mean temperature of the coldest month is above freezing (32F). Only the wettest areas of the Sandia foothills are barely semi-arid, where precipitation is more than half of, but still less than, evaporation; such areas are localized and usually lie above 6000 feet in elevation and often in arroyo drainages, signified by a slightly denser, taller growth of evergreen oak - juniper - pinon chaparral and rarely, woodland, often mixed with taller desert grasses. These elevated foothill areas still border arid areas, best described as desert grassland or desert shrub, on their west sides.
Traveling to the west, north and east of Albuquerque, one quickly rises in elevation and leaves the sheltering effect of the valley to enter a noticeably cooler and slightly wetter environment. One such area is still considered part of metro Albuquerque, commonly called the "East Mountain" area; it is covered in savannas or woodlands of low juniper and pinon trees, reminiscent of the lower parts of the southern Rocky Mountains, which do not actually contact Albuquerque proper.
Those mountains and highlands beyond the city create a "rain shadow" effect, due to the drying of descending air movements; the city usually receives very little rain or snow, averaging 8-9 inches (216 mm) of precipitation per year. Valley and west mesa areas, farther from the mountains are drier, averaging 6-8 inches of annual precipitation; the Sandia foothills tend to lift any available moisture, enhancing precipitation to about 10-17 inches annually. Most precipitation occurs during the summer monsoon season (also called a chubasco in Mexico), typically starting in early July and ending in mid-September.
(Source: Wikipedia.org)
