Looking on the internet deeply has found these results:

I knew it was going to rain is the most popular phrase on the web.

I knew it is going to rain 12 results on the web	I knew it was going to rain 1362,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Then you can tell me if it is going to rain on my wash day. New products aside, there will be fat years and there will be lean years, but it is going to rain. This one sings when it is going to rain. It is going to extend its legs out. It is going to change the world for the better. And it is going to get radical. It is going to colegislate, it is going to agree, it is going to have to exercise that balance, which is so difficult at times, between security and freedom. There is a little drought but they say it is going to rain this week, we'll see.	So, I knew it was going to be interesting. And I knew it was going to be that way going into this. I knew it was going to be a good match. Once promicin got out there, I knew it was going to change everything forever. I knew it was going to be a girl. I checked the weather in Cincinnati, I knew it was going to be humid. I knew it was going to come down to this half hour, on a cliff band at 28,300 feet. If I knew it was going to be this kind of an evening.

I knew it is going to rain

12 results on the web

I knew it was going to rain

1362,000 results on the web

More popular!

Then you can tell me if it is going to rain on my wash day.
New products aside, there will be fat years and there will be lean years, but it is going to rain.
This one sings when it is going to rain.
It is going to extend its legs out.
It is going to change the world for the better.
And it is going to get radical.
It is going to colegislate, it is going to agree, it is going to have to exercise that balance, which is so difficult at times, between security and freedom.
There is a little drought but they say it is going to rain this week, we'll see.

So, I knew it was going to be interesting.
And I knew it was going to be that way going into this.
I knew it was going to be a good match.
Once promicin got out there, I knew it was going to change everything forever.
I knew it was going to be a girl.
I checked the weather in Cincinnati, I knew it was going to be humid.
I knew it was going to come down to this half hour, on a cliff band at 28,300 feet.
If I knew it was going to be this kind of an evening.