A system, method, and graphical user interface (GUI) are disclosed for defining and applying time varying static thresholds. Time varying static thresholds may enable a user (e.g., IT manager) to define multiple sets of key performance indicator (KPI) thresholds that vary over time, for example, one set may apply during week-days and another set may apply on weekends. This may enable a user to have thresholds that take into account cyclical patterns of behavior (e.g., repeat every week). The KPI thresholds may be based on any unit of time, such as an hour of the day, days of the week, a month of the year (such as a holiday season). Each set may include KPI thresholds that specify values that when exceeded may initiate an alert or some other action.