* Euro bounces off 10-week lows against U.S. dollar
* U.S. manufacturing, ADP payrolls data on tap
* Chinese factory report points to global growth
* Futures up: Dow 130 pts, S&P 12.2 pts, Nasdaq 18.25 pts
NEW YORK, Dec 1 (Reuters) - December started on a high note for U.S. stock index futures on Wednesday as upbeat Chinese factory data lifted investor confidence about a global economic recovery, and the euro bounced back from 10-week lows.
* A slew of U.S. economic reports are due later Wednesday, with ISM manufacturing at 10 a.m. EST (1500 GMT) expected to show the sector expanded for a 15th month running, further supporting U.S. equities.
* China posted better-than-expected factory production data in November, with its purchasing managers' index rising to a seven-month high.
* Giving support to risk-taking, the euro rose as a three-day selling spree lost steam, and the yield premiums on some European government debt over safe-haven German bonds narrowed slightly. In recent weeks, the euro and U.S. stocks have traded in sync with each other.
* But gains could be capped by lingering concerns over the euro zone crisis, with investors waiting to see the next move by policymakers.
* Standard & Poor's warned it could cut Portugal's credit ratings within the next three months if growth prospects weaken further or private creditors become subordinated to public creditors in a possible financial aid program.
* S&P 500 futures rose 12.2 points and were above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures jumped 130 points, and Nasdaq 100 futures added 18.25 points.
* Other U.S. data likely to highlight the health of the U.S. economy include the ADP private payrolls report at 8:15 a.m. EST (1315 GMT). It's expected to show the sector created 69,000 jobs in November.
* U.S. Federal Reserve Chairman Ben Bernanke warned Tuesday that a long period of high unemployment could lead to a steep social cost, as he and other Fed officials defended against criticism of its current monetary policy.
* U.S. banks are expected to bounce from recent declines, with the Select Sector SPDR Financial ETF up 0.8 percent in light trading.
* U.S. stocks fell Tuesday in choppy trading after S&P's comments on Portugal.