Forecast Details for San Marcos, CA

Recent Locations: San Marcos, CA  
Overnight: A slight chance of rain after 4am. Increasing clouds, with a low around 47. East wind around 5 mph. Chance of precipitation is 10%.
Wednesday: A slight chance of rain before 10am, then a slight chance of rain after 4pm. Partly sunny, with a high near 66. Southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 20%.
Wednesday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 51. Calm wind becoming west around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 62. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 50. West wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Friday Night: A slight chance of rain before 10pm. Mostly cloudy, with a low around 46. Chance of precipitation is 20%.
Saturday: Mostly sunny, with a high near 64.
Saturday Night: Partly cloudy, with a low around 44.
Sunday: Mostly sunny, with a high near 66.
Sunday Night: Partly cloudy, with a low around 44.
Monday: Sunny, with a high near 62.
Monday Night: Partly cloudy, with a low around 43.
Tuesday: Mostly sunny, with a high near 62.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

Drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation

Weather Topic: What is Fog?

Home - Education - Cloud Types - Fog

Fog Next Topic: Fractus Clouds

Fog is technically a type of stratus cloud, which lies along the ground and obscures visibility.

It is usually created when humidity in the air condenses into tiny water droplets. Because of this, some places are more prone to foggy weather, such as regions close to a body of water.

Fog is similar to mist; both are the appearance of water droplets suspended in the air, but fog is the term applied to the condition when visibility is less than 1 km.

Next Topic: Fractus Clouds