Forecast Details for Costa Mesa, CA

Recent Locations: Costa Mesa, CA  
Today: Sunny, with a high near 68. Southeast wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tonight: Partly cloudy, with a low around 53. West wind 5 to 10 mph becoming southeast after midnight.
Tuesday: Sunny, with a high near 69. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night: Partly cloudy, with a low around 54. Southwest wind 5 to 10 mph becoming southeast after midnight.
Wednesday: Mostly sunny, with a high near 70. Southeast wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night: Partly cloudy, with a low around 56.
Thursday: Mostly sunny, with a high near 69.
Thursday Night: Increasing clouds, with a low around 55.
Friday: Cloudy through mid morning, then gradual clearing, with a high near 70.
Friday Night: Mostly cloudy, with a low around 55.
Saturday: Mostly sunny, with a high near 69.
Saturday Night: Mostly cloudy, with a low around 56.
Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 69.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Want to Receive our Free Daily Forecast Emails in your inbox by 5 a.m.?
There are no ads! Learn More
We respect your privacy and will not share or sell your email with anyone.

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 Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Cirrostratus Clouds Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails