Indian summer

an Indian summer (warm sunny weather in autumn, when it would usually be colder) — бабье лето, золотая осень; || вторая молодость (перен.).

1. a period of time in autumn when the weather is warm and sunny.

Example 1: Many places in Europe are now enjoying an Indian summer in September.

Example 2: It was misty and cold today, after yesterday's Indian summer.

2. a happy or successful period of time near the end of your working life, or when you are old.

Example: Seventies bands seem to be enjoying an Indian summer of popularity.