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).
Weather in North-West Spain in April. Much the same as in March, the weather in Santiago is mild but very wet. Tell the Galicians that spring is here and they'll probably laugh in your face - not here it's not! The average maximum temperature in Santiago de Compostela in April is 63Â°F/17Â°C and the average minimum temperature is 46Â°F/8Â°C.