After two or three hours, there should be an accurate forecast of the outcome of the election.

So don't rely on the saints for an accurate forecast, but don't completely ignore them either.

But the hairstyle index has a series of competitors in the 'most accurate forecast' stakes.

The colours of the sky, shapes of clouds and how they change over a few hours can often be give you an accurate forecast.

It was a remarkably accurate forecast made without computers or satellites.