When a predict weather spell is cast by a druid, he or she gains 100% accurate knowledge of the weather (sky, temperature, precipitation) in a nine square mile area centering on the druid. For each level of experience of the druid casting the spell, two hours advance weather can be forecast. Thus, at Ist level the druid knows what the weather will be for two hours; at second level he or she knows the weather for 4 hours in advance, etc.