Excellent Weather + Climate Resources

American Meteorological Society page of weather resources, with many items useful to teaching. Good links to National Weather Service (NWS) resources, also.
Geostationary Satellite Server from NOAA: Wonderful imagery from the GOES
National Weather Service (NWS): National Oceanic and Atmospheric Administration (NOAA)
NWS San Francisco Bay/Monterey Station: Current local weather information, includes latest El Niño news, Web Cams, Current Hazards, Local Warnings, Storm Reports, Current Conditions, Forecasts, Maps & Charts, Fire Weather, Winter Weather, Sun/Moon/Tides, Climate Outlook, Weather Safety, and Miscellaneous. Check the left side bar for navigating through the pages.
NRL Monterey Marine Meteorology Division Satellite Meteorology
SJSU weather cams and archives; link to Meteorology department
WeatherScapes: This site contains photographs of many weather phenomena, and information on how to photograph these. The photo collection consists of five categories: Atmospheric Optics, Lightning, Clouds, Astronomy, Miscellaneous

El Niño Teaching Box with NGSS-aligned resources from UCAR Center for Science Education
El Niño Theme Page from Pacific Marine Environmental Laboratory (PMEL)
Global Tropical Moored Buoy Array: Real-time data from the moored buoys for improved detection, understanding, and prediction of El Niño and La Niña
NOAA El Niño & La Niña homepage: links to El Nino forecast, observations, and research
USGS News and Information on El Niño
USGS Oblique Aerial Photography: Coastal Erosion from El-Niño Winter Storms in Central California, Southern California, Washington, and Oregon
Glossary of El Niño terms from Golden Gate Weather Services