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San Diego, California on average, has 146 sunny days and 117 partly cloudy days a year. San Diego predominantly has a semi-arid warm steppe climate (Koppen climate classification BSh). It enjoys mild, sunny weather throughout the year. Image File history File links Wiki_letter_w. ... The license Wikipedia uses grants free access to our content in the same sense as free software is licensed freely. ... Nickname: Americas Finest City Location of San Diego within San Diego County Coordinates: Country United States State California County San Diego Founded July 16, 1769 Incorporated March 27, 1850 Government  - Mayor Jerry Sanders  - City Attorney Michael Aguirre  - City Council Scott Peters Kevin Faulconer Toni Atkins Tony Young Brian Maienschein... Semi-arid generally describes regions that receive low annual rainfall (25 to 50 cm /10 to 20 in) and generally have scrub or grass vegetation. ... A steppe in Western Kazakhstan in early spring In physical geography, a steppe (Russian: - , Ukrainian: - , Kazakh: - ), pronounced in English as , is a plain without trees (apart from those near rivers and lakes); it is similar to a prairie, although a prairie is generally considered as being dominated by tall grasses... The Köppen climate classification is one of the most widely used climate classification systems. ...

Average monthly temperatures range from about 57 Fahrenheit (14 °C) in January to 72 Fahrenheit (22 °C) in July, although late summer and early autumn are typically the hottest times of the year. Snow and ice are rare in the wintertime, typically occurring only inland from the coast when present. "May gray and June gloom", a local saying, refers to the way in which San Diego sometimes has trouble shaking off the fog that comes in during those months. Temperatures soar to very high readings only on rare occasions, chiefly when easterly winds bring hot, dry air from the inland deserts (these winds are called "Santa Anas"). Evening fog obscures Londons Tower Bridge from passers by. ... Santa Ana winds are warm, dry winds that characteristically appear in Southern California weather during autumn and early winter. ...

The average annual precipitation is less than 12 inches (300 mm), resulting in a borderline arid climate. Rainfall is strongly concentrated in the cooler half of the year, particularly the months December through March, although precipitation is lower than any other part of the U.S. west coast. The summer months are virtually rainless. Rainfall is highly variable from year to year and from month to month, and San Diego is subject to both droughts and floods. Thunderstorms and hurricanes are very rare. A millimetre (American spelling: millimeter), symbol mm is an SI unit of length that is equal to one thousandth of a metre. ...

Climate in the San Diego area often varies dramatically over short geographical distances, due to the city's topography (the Bay, and the numerous hills, mountains, and canyons): frequently, particularly during the "May gray / June gloom" period, a thick "marine layer" cloud cover will keep the air cool and damp within a few miles of the coast, but will yield to bright cloudless sunshine between about 5 and 15 miles inland -- the cities of El Cajon and Santee for example, rarely experience the cloud cover. This phenomenon is known as microclimate. Cumulonimbus capillatus incus floating over Swifts Creek, Victoria in Australia A cloud is a visible mass of condensed droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. ... El Cajon (pronounced el ka-HONE) is a city located in San Diego County, California. ... Santee is a city located in San Diego County, California. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

Compared to National Averages

On average San Diego sees 41 days with some precipitation while the rest of the country sees about 110. The national average for mostly sunny days is 213 while San Diego's is 267. San Diego's annual snowfall is 0 inches per year while the nation usually sees an average of 24.2 inches per year. The United States average for days above 90 degrees is 37.9 days while San Diego's is only 3 days^{[citation needed]}, and there are, on average 0 days below 32 degrees in San Diego, while the national average is 88 days. The average low temperature in January for the country is 26.5 degrees, and for San Diego it is 50 degrees. The Average high temperature in July for San Diego is 76 degrees, but the national average is 86.8 degrees.

Monthly Averages

Weak Points

Like all climates, San Diego's has its drawbacks. For one, the months of September through November bring winds that locals like to call, "Santa Ana's". These winds, although only occurring about 10 days out of the year bring sometimes hot, but always dry conditions. Inland, and in mountain passes and canyons, they can burst out in gusts of 100 mph and can lower relative humidity to single digits, although by the coast they rarely see gusts of over 40 mph. They spread wildfires. Santa Ana Winds may refer to: 1. ...

During the months of May and June, a common natural occurrence brings a thin layer of clouds that covers coastal and inland communities. Some call it "May Gray", or "June Gloom", but these conditions usually burn off to completely sunny skies by noon. June Gloom (also May Gray) is the news weathermans shorthand for a Southern California weather pattern which results in overcast skies with low to moderate tempatures for most of the months of May and June, before July arrives and summer properly begins. ... June Gloom (also May Gray) is a local term for a Southern California weather pattern that results in overcast skies with low to moderate temperatures during the early summer (sometimes referred to as May Gray when it occurs in late spring). ...

See Also

• Climate of California

Fog at the Golden Gate Bridge Californias climate varies widely, from subtropical to subarctic, depending on latitude, elevation, and proximity to the coast. ...

External Links

• USTravelWeather.com: San Diego Weather and Climate