California
- California Data Exchange Center California Dept. of Water Resources, Division of Flood Management. Access point to the CDWR Operational Hydrologic Data. Snow pack, river stages, stream flows, precip/snow.
- FEMA El Niño Resources CERES
- California Environmental Resources Evaluation System (CERES) keyword: Climate and Weather
- California Irrigation Management Information System (CIMIS) Detailed weather information for irrigation scheduling from the CIMIS weather stations around the state
- California State Information from National Oceanic and Atmospheric Administration (NOAA), National Weather Service
- Intellicast Links to local forecasts, current weather, radar and satellite imagery
- UC Statewide IPM Project daily weather data and climatic averages from current reporting and historical stations across California.
- UC IPM Degree-day calculator connected to the weather data in UC IPM's weather database
Regional and National
- National Weather Service: National Oceanic and Atmospheric Administration (NOAA)
- USA Today Weather