* C$ at C$1.0321 vs US$, or 96.89 U.S. cents * U.S. government shutdown enters second week * World Bank lowers China growth forecast * Bond prices higher across curve By Leah Schnurr TORONTO, Oct 7 (Reuters) - The Canadian dollar weakened on Monday as a U.S. federal government shutdown stretched into its second week with lawmakers no closer to an agreement, and after the World Bank lowered its growth forecast for China. A large drop in Canadian building permits in August briefly took the loonie to a session low. The partial government shutdown south of the border that started last week had no end in sight and was bringing lawmakers closer to a separate and more crucial deadline to raise the U.S. debt ceiling in order to avoid default. Investors are concerned about what impact the budget standoff will have on a still-fragile economic recovery in the United States, Canada's largest trading partner. Markets have also been focused on when the Federal Reserve will start to withdraw its economic stimulus efforts after the central bank surprised investors with a decision to hold steady last month. The government shutdown has thrown some doubt on how soon the Fed will be able to pull back. "It's at the point now where they're obviously negotiating the whole fiscal picture - the debt ceiling, plus the spending," said Don Mikolich, executive director of foreign exchange sales at CIBC World Markets in Toronto. "It's leading some to wonder whether tapering is due to be pushed out much further to the end of the year or potentially into the new year." The World Bank overnight cut its growth forecasts for China's economy to 7.5 percent this year, down from its April forecast of 8.3 percent and below the International Monetary Fund's most recent forecast of 7.75 percent. The World Bank said that the country's investment-heavy stimulus had run its course and that policymakers must focus on containing the growth of credit. The outlook of slower growth for China weighed on the Canadian dollar because it points to weaker prospects for global growth and suggests less potential demand for resources, a major driver of the loonie. The Canadian dollar ended the session at C$1.0313, or 96.96 U.S. cents, weaker than Friday's close of C$1.0292, or 97.16 U.S. cents. The Canadian currency earlier hit a session low of C$1.0334. Following a brief spike after the Fed's decision to stand pat on its economic stimulus program on Sept. 18, the Canadian dollar has been trading in a tight range for several sessions. Analysts see the loonie trading in a range between mid-C$1.02 and mid-C$1.03, baring a resolution or other catalyst. "There's not a lot of flows in the market given that we're so range-bound," said Mikolich. The seasonally adjusted value of Canadian building permits issued in August slumped 21.2 percent to C$6.34 billion ($6.16 billion), reversing July's 21.4 percent surge. Investors will get another look at the domestic housing market on Tuesday when housing starts for September are released. Prices for Canadian government bonds were higher across the maturity curve. The two-year bond rose half a Canadian cent to yield 1.187 percent, while the benchmark 10-year bond gained 12 Canadian cents to yield 2.569 percent.