This is the 13851st most frequent Russian word.
обещает
"Promises."
The word 'обещает' here is used in its verb form to mean to promise, indicating the assurance or commitment to perform an action.
Он обещает прийти на встречу вовремя.
He promises to come to the meeting on time.
In this sentence, 'обещает' means that the sky gives signs or expectation of rain, used figuratively.
Небо обещает дождь.
The sky promises rain.
Here, 'обещает' refers to the action of making a promise, highlighting the act of communication of intent or agreement.