If you think October was bad for U.S. retailers, wait till you see what's in store for November.

ChangeWave's latest consumer spending survey shows yet another giant downturn in U.S. consumer spending going forward. And relatively speaking, it's far more pronounced than the October downturn.

The survey of 2,763 U.S. consumers, completed November 3, focused on spending patterns for the next 90 days, including the holiday season. Here's what we found.

Grim Outlook

Nearly three-in-five (59%) respondents now say they'll spend less money over the next 90 days, 7-pts worse than previously. Only one-in-ten (10%) say they'll spend more—8-pts worse than previously.

"These findings strongly support the thesis that fourth-quarter earnings will be far more painful than currently expected," said Tobin Smith, founder of ChangeWave Research and editor of ChangeWave Investing.

But why are consumers spending less?