GRAINS-Soybeans rise again as Argentina set for more dry, hot weather

* Soybeans up for 9th straight day, hit near 7-week high

* Weather outlook suggests more stress for Argentine soy crops

* Corn also firm on Argentina weather risks

* Dollar slide lends broad support, wheat at 2-week top

(Updates with European trading, changes byline/dateline) PARIS/SINGAPORE, Jan 25 (Reuters) - Chicago soybeans hit their highest level in almost seven weeks on Thursday as weather forecasts pointed to more dry, hot weather in Argentina that could hurt harvest prospects in the major exporter. Corn and wheat also edged higher as a weaker dollar, which touched a new three-year against a basket of currencies, lent broad support to dollar-priced commodities. The most-active soybean contract on the Chicago Board Of Trade was up 0.3 percent at $9.94-3/4 a bushel by 1220 GMT, the highest since Dec. 8 and approaching the psychological $10 threshold. Soybeans extended gains to a ninth straight session, their longest rally since March 2012. Persistent dryness in Argentina's main crop belt has worried traders and given impetus to a soybean market that had been weighed down by swelling supplies from top exporter Brazil. "We have seen a big run-up in soybean prices as there have been weather concerns in Argentina," said Phin Ziebell, agribusiness economist at National Australia Bank. "But the rally could be running out of steam as there is no major supply risk with ample supplies in the United States and Brazil." Dryness there has fuelled forecasts of lost plantings and yield damage that could potentially tighten global supplies and make U.S. exports look more attractive. "More of the same in Argentina as dry weather stays entrenched over the core (grain belt)," Thomson Reuters Agriculture Research analysts said in a note. CBOT corn was up 0.1 percent at $3.57 a bushel. Weather worries in Argentina have also supported corn. The U.S. Department of Agriculture's (USDA) local office in Argentina on Wednesday projected the country's corn crop at 40 million tonnes this season, 2 million below the USDA's current official forecast. The grains complex had been underpinned by the dollar's slide, fuelled by comments from U.S. Treasury Secretary Steven Mnuchin welcoming a weaker currency. CBOT wheat added 0.5 percent to $4.35 a bushel, trading at its highest levels in almost two weeks. It closed up 2.7 percent on Wednesday in a short-covering rally fuelled by the tumbling dollar. Commodity funds were net buyers of Chicago Board of Trade corn, wheat and soybean futures contracts on Wednesday, traders said.

Prices at 1220 GMT

Last Change Pct End Ytd Pct Move 2017 Move CBOT wheat 435.00 2.00 0.46 427.00 1.87 CBOT corn 357.00 0.50 0.14 350.75 1.78 CBOT soy 994.75 2.50 0.25 961.75 3.43 Paris wheat Mar 156.75 0.25 0.16 159.00 -1.42 Paris maize Mar 152.50 0.75 0.49 157.75 -3.33 Paris rape Feb 341.75 -0.50 -0.15 347.75 -1.73 WTI crude oil 66.25 0.64 0.98 60.42 9.65 Euro/dlr 1.24 0.00 -0.01

Most active contracts - Wheat, corn and soy US cents/bushel, Paris futures in euros per tonne

(Reporting by Naveen Thukral in Singapore and Gus Trompiz in Paris; Editing by Amrutha Gayathri and Susan Fenton)