It rarely rains during the summer.

I wonder how often it rains in this area.

It is raining, thus I will bring an umbrella.

It's been raining since morning.

It rained heavily; nevertheless, we had a great time at the park.

It started raining, and therefore, we had to cancel our picnic.

Unless it rains, we'll have a picnic tomorrow.

The weather was sunny, but it suddenly started raining.

I wanted to go to the party, but it's raining, though.

Although it was raining, they went for a walk.

I can't go out because it's raining.

I won't go out unless it stops raining.

It may rain.

It's sure to rain.

It may rain soon.