Forecast Details for San Antonio, TX

Recent Locations: San Antonio, TX  
Tonight: Areas of fog after 3am. Otherwise, mostly clear, with a low around 50. North wind around 5 mph becoming calm.
Friday: Areas of fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night: Increasing clouds, with a low around 57. South southwest wind around 5 mph becoming calm.
Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 80. West southwest wind around 5 mph becoming northwest in the afternoon.
Saturday Night: Mostly clear, with a low around 51. North wind around 5 mph.
Sunday: Sunny, with a high near 78. North wind around 5 mph becoming south in the afternoon.
Sunday Night: Clear, with a low around 53. South wind around 5 mph.
Monday: Sunny, with a high near 83. Southwest wind 5 to 10 mph.
Monday Night: Clear, with a low around 55. Southwest wind 5 to 10 mph becoming north after midnight.
Tuesday: Sunny, with a high near 71.
Tuesday Night: Mostly clear, with a low around 48.
New Year's Day: Mostly sunny, with a high near 61.
Wednesday Night: Partly cloudy, with a low around 43.
Thursday: Mostly sunny, with a high near 61.

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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

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog