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).
Key weather averages for Chile in March. 1  23. 23Â°C max day temperature. 2  9. 9 hours of sunshine per day. 3  4. 4 days with some rainfall. 4  12. 12Â°C min night temperature. 5  12. 12 hours of daylight per day. 6  L. Low heat & humidity. 7  4. 4 mm of monthly rainfall. 8  10. 10 (Very High) UV index.