Forecast Details for Simi Valley, CA

Recent Locations: Simi Valley, CA  
Current Alerts for Simi Valley, CA: Fire Weather Watch High Wind Watch
Red Flag Warning
Tonight: Mostly clear, with a low around 39. Northeast wind around 5 mph.
Sunday: Sunny, with a high near 64. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Sunday Night: Mostly clear, with a low around 38. Calm wind becoming east northeast around 5 mph in the evening.
M.L.King Day: Sunny, with a high near 64. Breezy, with an east northeast wind 5 to 10 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Monday Night: Clear, with a low around 44. Windy, with a northeast wind 20 to 25 mph increasing to 25 to 30 mph in the evening. Winds could gust as high as 40 mph.
Tuesday: Sunny, with a high near 65. Windy.
Tuesday Night: Mostly clear, with a low around 45. Breezy.
Wednesday: Sunny, with a high near 71.
Wednesday Night: Mostly clear, with a low around 49.
Thursday: Sunny, with a high near 73.
Thursday Night: Mostly clear, with a low around 47.
Friday: Sunny, with a high near 71.
Friday Night: Mostly clear, with a low around 44.
Saturday: A slight chance of rain. Mostly sunny, with a high near 64.

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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

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 Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain

Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail