There are CIMIS weather stations throughout California and AgriMet stations in Oregon, Washington, Idaho, and montana. The CIMIS stations are geographically categorized into four major regions or districts (Northern, Central, San Joaquin and Southern). To find which CIMIS district close to you, use the large California map. By clicking on your region in California, one of the four district maps will be displayed in detail. Now select the CIMIS weather station nearest you by clicking on the appropriate number. Wateright will remember this weather station, and carry this information throughout your irrigation schedule session when you select "Use this CIMIS station".
Once you have a weather station, select the day of the week on which you want to start the schedule and the number of weekly intervals. Wateright will summarize daily information into one, two, or four week intervals.