Statewide Hydroclimate and Water Supply Conditions:

Precipitation Temperature Reservoirs Streamflow Groundwater Snowpack Soil Moisture Vegetation Conditions

Click link below to view region/area/statewide:

Hydrologic Regions

  1. North Coast
  2. Sacramento River
  3. North Lahontan
  4. San Francisco Bay
  5. San Joaquin River
  6. Central Coast
  7. Tulare Lake
  8. South Lahontan
  9. South Coast
  10. Colorado River

Drainage Areas

  1. Northern Central Valley Drainage Area
  2. Mid-Central Valley Drainage Area
  3. Southern Central Valley Drainage Area
Statewide
Precipitation Statistics (period of record: 1981-current)
 as of 11/02/2025
Water Year to Date:
% of Average:
Precipitation % of average for full water year through September 30th:

Historical Record to Date:
Max:
Mean:
Min:
Annual Precipitation Accumulation (period of record: 1981-current)
 as of 11/02/2025
Temperature Statistics (period of record: 1981-current)
 as of 11/02/2025
Mean Temp:
% of Average:

Historical Record:
Max:
Mean:
Min:
Mean Temperature (period of record: 1981-current)
 as of 11/02/2025