Note: Certification of an interlocutory decision by a trial court allows an appellate court to review the decision and to answer a controlling question of law. Certification is often used in state courts as well as federal courts and, where available, allows a federal court to refer a question of state law to the state's highest court. Certification is also used to refer to a judge's order that allows a suit to be maintained as a class action.
1 The average temperature in Santiago in December is somewhat warm at 19.2 Â°C (66.56 Â°F).  Afternoons can be very hot with average high temperatures reaching 28 Â°C (82.4 Â°F).
Climate and Weather in central Chile. The weather in central Chile is typical of a Mediterranean climate. Summers are warm and winters are much cooler and wetter. The average high temperature during summer in Santiago is 20Â°C (68Â°F), while winter lows between June and July drop to 8Â°C (46Â°F).limate and Weather in central Chile. The weather in central Chile is typical of a Mediterranean climate. Summers are warm and winters are much cooler and wetter. The average high temperature during summer in Santiago is 20Â°C (68Â°F), while winter lows between June and July drop to 8Â°C (46Â°F).