That's a plan that sounds likely to be cancelled by rain.

If it's rainy the mountain climbing will be called off.

I'm afraid it will be rainy tomorrow.

If it rains on that day, the game will be postponed until the next fine day.

The game will be played rain or shine.

In case of rain, the athletic meeting will be called off.

Telephone me if it rains.

After rain comes fair weather.

I'm fed up with this wet weather.

I don't like rainy weather.

If it rains, the game will be called off.