There is a good chance it will rain tomorrow.

a possibility of something happening
You have a chance to win.
This is your only chance.
Take a chance on this.
good chance
slim chance
take a chance
possibility
opportunity
likelihood
She had a chance to win the lottery.

A possibility or opportunity for something to happen.
It was a chance meeting.
The result was chance, not skill.
This is a chance encounter.
chance encounter
chance meeting
by chance
accidental
random
unforeseen
She took the chance to travel the world.

an opportunity to do something
This is your chance to shine.
He missed his chance to speak.
Don't waste this chance.
take a chance
by chance
chance encounter
opportunity
possibility
opening