This is the 7212th most frequent Russian word.
вероятность
Probability.
In this sentence, "вероятность" is used to indicate the likelihood or chance that an event (rain) might occur. It reflects the concept of probability.
Вероятность дождя сегодня довольно высокая.
The likelihood of rain today is quite high.
Here, "вероятность" conveys a small probability or chance of successfully doing something (catching the last train).
У нас есть небольшая вероятность успеть на последний поезд.
We have a slight chance of catching the last train.
In this statement, "вероятность" expresses the degree of chance or likelihood that a person will take a particular action (agree).