Here are a few outstanding sites that we have reviewed.
They should prove to be quite useful for your pre-flight planning.
"Pilots!!! Remember that these sights are provided to help you
get a better idea of what's going on. Be sure to get a proper
route briefing and file a flight plan before departing."
BE WEATHER-WISE AT ALL TIMES!!!
1-800-WX-BRIEF / DUATS 1-800-767-9989
National Weather Service
This is an excellent site where you can obtain detailed weather about the central valley. They have a good aviation weather area.
SFSU Meteorology Department
This site contains good updated weather information for all of California. Great detailed information concerning the San Francisco Bay area.
National Weather Service
Southern California
Great weather coverage
of Southern California.
Good Aviation Section
The Weather Channel
Good up-to-date weather information. Good maps, charts, and descriptions of what is going on. They also have an aviation weather section.