U.S. stocks were tipped to open higher on Tuesday, judging by trade in equity futures, recovering some of the previous day's falls as investors waited to see how the crisis in Greece unfolds.
Focus was also seen turning to U.S. economic data with May international trade numbers out at 8:30 a.m. EDT, followed by JOLTs job openings data at 10 a.m. and May consumer credit figures at 3 p.m.
"The U.S. economy is continuing to generate mixed signals in the wake of last week's rather disappointing payrolls report," Michael Hewson, chief markets analyst at CMC Markets, said in a note.
"May's trade balance data is expected to show a wider $42.75 billion deficit, from April's $40.9 billion figure."
Read More Greece fallout keeps tensions high
Wall Street shares closed lower on Monday amid heightened fears of a Greek exit from the euro zone after voters in the country rejected creditors' bailout terms in a referendum on Sunday. Euro zone finance ministers meet later on Tuesday to discuss the crisis.
Stock futures on all three main U.S. stock markets traded higher in London, with Dow Jones industrial average futures up about 115 points.
The benchmark Shanghai Composite fell more than 1 percent amid doubts that steps taken by Beijing in the past week would shore up battered stock markets.
The index has shed almost 30 percent of its value in the past month, fueling concerns that a sharp sell-off in stocks will exacerbate a slowdown in China's economy – the world's second largest.
Elsewhere, oil prices stabilised after a massive sell-off on Monday triggered by concerns over Greece and the rout in China's stock market.
U.S. crude futures traded around $53.15 a barrel on Tuesday – more than 1 percent higher on the day and off the previous session's three-month lows.
Companies reporting earnings this session include The Container Store. The U.S. Treasury is scheduled to hold a three-year note auction later in the day.