auspicious sign

Translations
благоприятный знак
The clear skies were seen as an auspicious sign for the festival.
Ясное небо считалось благоприятным знаком для фестиваля.
Definitions
An auspicious sign is an indication or omen that is considered to be favorable or promising, often suggesting that success or good fortune is likely to follow.
Words
auspicious

adjective
благоприятный
sign

noun
знак