ET Weather Stations

SMWD has two weather stations connected to the California Irrigation Management Information System (CIMIS) which provides 24/7 monitoring of local weather. The District's budget-based tiered rate structure uses daily evapotranspiration (ETo) data based on accounts' billing cycles to calculate outdoor water budgets.

Talega Weather Station

California Irrigation Management Information System (CIMIS)

Station #245 in Coto De Caza

ETo values for all SMWD customers except those in San Clemente

Station #241 in San Clemente

ETo values for Talega customers

Water Budget Infographic


The CIMIS website contains the data from our two weather stations.

  1. On the Data tab, select the type of report to run from hourly, daily, or monthly from the drop-down menu.
  2. Scroll all the way down to select either Station 241 (San Clemente) or Station 245 (Coto de Caza).
  3. Click "Run Report" for the weather data. Alternatively, view a simplified chart of daily ETo values.