Weather

Atmospheric Optics
Rainbows, ice halos, iridescent clouds, circumzenithal arcs -- these are just a few of the amazing atmospheric phenomena explained and pictured at this fascinating and educational site.

CNN Weather
National and international weather maps and forecasts from CNN.com.

Intellicast
National and international forecasts; "Weather for active lives."

KGO Accuweather
Forecast, radar, and satellite data from KGO television in San Francisco.

KPIX Weather
Easy-to-digest TV weather graphics and forecasts for the Bay Area.

Marin County Flood Control and Water Conservation District
Real-Time Weather Page
Real-time and historical weather data from the MCFCWCD via a complex interactive interface.

Marin Municipal Water District
Everything you want or need to know about Marin County's water system can be found here.

National Weather Service
Featuring current weather warnings and current radar and satellite images for the United States.

National Weather Service Bay Area / Monterey
No-frills forecasts and conditions for the Bay Area, plus satellite images.

Old Farmer's Almanac Weather History
Find weather history for any of 2,000 locations in the United States and Canada on any date from 1946 to the present.

SF Gate Bay Area Weather
Current conditions and forecasts for the entire Bay Area.

SnoWeb
Lake Tahoe skiing and snowboarding conditions.

Weather.com
Online home of the Weather Channel, with national and international forecasts, weather maps, and weather news.

Weather Underground
Comprehensive conditions and forecasts for the United States.

Weather Underground Bay Area Marine Forecast
Wind forecasts, plus tide projections for dozens of locations in the bay.